Operator Precedence in javascript

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<h4> Operator Precedence In Javascript.</h4>

<script>
let x = 10;
let y = 5;
let z = 3;

document.write( x + y - z + 4 );
/*Result is  16 [ 10 + 5 - 3 + 4 ]   */ 
document.write("<br>");
document.write( x - y - z + 4);
/*Result is 6 [ x - y - z + 4 ]  */ 
</script>

</body>
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