Javascript lesson 2 - variables, appending strings, adding numbers

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Today we talk about the use of variables - we show you how to append string variables together and how to add numerical variables, then output the result to the screen.

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Good lesson thanks! I've got a quick question though, can you help me? I'm trying to add 3 numbers and display it by affecting a <p> tag. However, when I try and add the numbers it just adds the string instead (so for example it'll say 1+2+3 = 123). I've tried everything, i don't know what to do :(

<!doctype html>

<html lang="en">
<head>


<title>Second Test!</title>

<p>please enter in 3 numbers</p><br>
<p>a=</p><input id="a" id="b" id="c" type="number"></input><br>
<input type="button" value="find the roots" onclick="solve();"><br>

<p id="first_root"></p>
<body>
<script>
          

function solve() {
x =
y =
z =
= x+y+z;
}


</script>

</body>
</html>

matthewjames