7.2ActC1

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <title>7 challenge #1</title>
</head>
<body>
    <h3><b>F = C</b></h3>
<script>
 var f = 19;
 while (f <= 39)
    {
    document.write(f +"  =  "+Math.round(f -35 * 5 / 9 )+"<br>");
        f ++;
    }

</script>
</body>

</html>