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<!-- LE.php --> <center> <font color=blue> <H2> Solution for Linear EQ: ax + b = 0 </H2> <HR> <?php $a = $_POST['aVar']; $b = $_POST['bVar']; // debugging print "a = $a,\n b = $b<P>"; if($a == 0) { print "No real root."; } else if($a != 0) { $x = -$b/$a; $x = number_format($x, 2); print "Root: $x"; } ?> </font> </center>