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HTML

<!DOCTYPE html>
<html>
<body>

<h1>Cálculo con variables en JS</h1>

<p id="demo"></p>

<script>
var price1 = 53;
var price2 = 62;
var total = price1 + price2;
document.getElementById("demo").innerHTML =
"El total es: " + total;
</script>

</body>
</html>

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JSFiddle - React, Tailwind, and code Playground

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Use pre-released features

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Console