The files, which i think i must edit are located@ web/app/design/frontend/mycompanyname/myproject/Magento_Tax/template/checkout/summary/item/details/subtotal.html & web/app/design/frontend/mycompanyname/myproject/Magento_Weee/templates/item/price/unit.phtml

`<!-- /**

• Copyright © Magento, Inc. All rights reserved.

• See COPYING.txt for license details. */ -->

The files, which i think i must edit are located@

web/app/design/frontend/mycompanyname/myproject/Magento_Tax/template/checkout/summary/item/details/subtotal.html

&

web/app/design/frontend/mycompanyname/myproject/Magento_Weee/templates/item/price/unit.phtml

 <!--
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
-->
<div class="subtotal">
    <!-- ko if: isPriceInclTaxDisplayed() && !getRegion('row_incl_tax') -->
    <span class="price-including-tax"
          data-bind ="text: getValueInclTax($parents[1]), attr:{'data-label': $t('Incl. Tax')}">
    </span>
    <!-- /ko -->

    <!-- ko if: isPriceInclTaxDisplayed() && getRegion('row_incl_tax') -->
    <span class="price-including-tax" data-bind ="attr:{'data-label': $t('Incl. Tax')}">
            <!-- ko foreach: getRegion('row_incl_tax') -->
                <!-- ko template: getTemplate() --><!-- /ko -->
            <!-- /ko -->
    </span>
    <!-- /ko -->

    <!-- ko if: isPriceExclTaxDisplayed() && !getRegion('row_excl_tax') -->
    <span class="price-excluding-tax"
          data-bind ="text: getValueExclTax($parents[1]), attr:{'data-label': $t('Excl. Tax')}">
    </span>
    <!-- /ko -->
    <!-- ko if: isPriceExclTaxDisplayed() && getRegion('row_excl_tax') -->
    <span class="price-excluding-tax" data-bind ="attr:{'data-label': $t('Excl. Tax')}">
            <!-- ko foreach: getRegion('row_excl_tax') -->
                <!-- ko template: getTemplate() --><!-- /ko -->
            <!-- /ko -->
    </span>
    <!-- /ko -->
</div>

And here the code of the unit.phtml `<?php /**

• Copyright © Magento, Inc. All rights reserved.
• See COPYING.txt for license details. / // @codingStandardsIgnoreFile /* @var $block \Magento\Weee\Block\Item\Price\Renderer */ $item = $block->getItem(); ?> displayPriceInclTax() || $block->displayBothPrices()): ?> escapeHtml(__('Incl. Tax')) ?>"> displayPriceWithWeeeDetails()): ?> getId() ?>"}}'> formatPrice($block->getUnitDisplayPriceInclTax()) ?>

`

<span class="price-excluding-tax" data-label="<?= $block->escapeHtml(__('Excl. Tax')) ?>">`
   ` <?php if ($block->displayPriceWithWeeeDetails()): ?>`
       ` <span class="cart-tax-total"
            data-mage-init='{"taxToggle": {"itemTaxId" : "#eunit-item-tax-details<?= /* @escapeNotVerified */ $item->getId() ?>"}}'>
    <?php else: ?>
        <span class="cart-price">
    <?php endif; ?>
            <?= /* @escapeNotVerified */ $block->formatPrice($block->getUnitDisplayPriceExclTax()) ?>
        </span>`

    <?php if ($this->helper('Magento\Weee\Helper\Data')->getApplied($item)): ?>
        <span class="cart-tax-info" id="eunit-item-tax-details<?= /* @escapeNotVerified */ $item->getId() ?>">
            <?php foreach ($this->helper('Magento\Weee\Helper\Data')->getApplied($item) as $tax): ?>
                <span class="weee" data-label="<?= /* @escapeNotVerified */ $tax['title'] ?>">
                    <?= /* @escapeNotVerified */ $block->formatPrice($tax['amount'], true, true) ?>
                </span>
            <?php endforeach; ?>
        </span>

        <?php if ($block->displayFinalPrice()): ?>
            <span class="cart-tax-total"
                  data-mage-init='{"taxToggle": {"itemTaxId" : "#eunit-item-tax-details<?= /* @escapeNotVerified */ $item->getId() ?>"}}'>
                <span class="weee" data-label="<?= $block->escapeHtml(__('Total')) ?>">
                    <?= /* @escapeNotVerified */ $block->formatPrice($block->getFinalUnitDisplayPriceExclTax()) ?>
                </span>
            </span>
        <?php endif; ?>
    <?php endif; ?>
</span>

And here the code of the unit.phtml

<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */

// @codingStandardsIgnoreFile

/** @var $block \Magento\Weee\Block\Item\Price\Renderer */


$item = $block->getItem();
?>

<?php if ($block->displayPriceInclTax() || $block->displayBothPrices()): ?>
    <span class="price-including-tax" data-label="<?= $block->escapeHtml(__('Incl. Tax')) ?>">
        <?php if ($block->displayPriceWithWeeeDetails()): ?>
            <span class="cart-tax-total"
                data-mage-init='{"taxToggle": {"itemTaxId" : "#unit-item-tax-details<?= /* @escapeNotVerified */ $item->getId() ?>"}}'>
        <?php else: ?>
            <span class="cart-price">
        <?php endif; ?>
        <?= /* @escapeNotVerified */ $block->formatPrice($block->getUnitDisplayPriceInclTax()) ?>
        </span>
    </span>
<?php endif; ?>

<?php if ($block->displayPriceExclTax() || $block->displayBothPrices()): ?>
    <span class="price-excluding-tax" data-label="<?= $block->escapeHtml(__('Excl. Tax')) ?>">`
        <?php if ($block->displayPriceWithWeeeDetails()): ?>`
           <span class="cart-tax-total"
            data-mage-init='{"taxToggle": {"itemTaxId" : "#eunit-item-tax-details<?= /* @escapeNotVerified */ $item->getId() ?>"}}'>
        <?php else: ?>
            <span class="cart-price">
        <?php endif; ?>
            <?= /* @escapeNotVerified */ $block->formatPrice($block->getUnitDisplayPriceExclTax()) ?>
        </span>`

    <?php if ($this->helper('Magento\Weee\Helper\Data')->getApplied($item)): ?>
        <span class="cart-tax-info" id="eunit-item-tax-details<?= /* @escapeNotVerified */ $item->getId() ?>">
            <?php foreach ($this->helper('Magento\Weee\Helper\Data')->getApplied($item) as $tax): ?>
                <span class="weee" data-label="<?= /* @escapeNotVerified */ $tax['title'] ?>">
                    <?= /* @escapeNotVerified */ $block->formatPrice($tax['amount'], true, true) ?>
                </span>
            <?php endforeach; ?>
        </span>

        <?php if ($block->displayFinalPrice()): ?>
            <span class="cart-tax-total"
                  data-mage-init='{"taxToggle": {"itemTaxId" : "#eunit-item-tax-details<?= /* @escapeNotVerified */ $item->getId() ?>"}}'>
                <span class="weee" data-label="<?= $block->escapeHtml(__('Total')) ?>">
                    <?= /* @escapeNotVerified */ $block->formatPrice($block->getFinalUnitDisplayPriceExclTax()) ?>
                </span>
            </span>
        <?php endif; ?>
    <?php endif; ?>
</span>