index.html

<!DOCTYPE html>

<html lang = "pt-br">
	<head>
		<meta charset = "utf-8"/>
		<title>Jprogram</title>
	</head>

	<body>
		<h1>Qual o resultado? | What is the result?</h1>

		<p id = "x1"> x = "Fiat" + 147; </p>
		<p id = "x2"> x = "Fiat" + 1 + 4 + 7; </p>
		<p id = "x3"> x = 147 + "Fiat"; </p>
		<p id = "x4"> x = 1 + 4 + 7 + "Fiat"; </p>

		<button id = "btn" type="button" onclick="showResult()">Result</button>
		<script type="text/javascript" src="script.js"></script>
	</body>
</html>