$x=1;
for ($a=$_POST["a"]; $a<=$_POST["aa"]; $a=$a+1) {
for ($b=$_POST["b"]; $b<=$_POST["bb"]; $b=$b+1) {
for ($c=$_POST["c"]; $c<=$_POST["cc"]; $c=$c+1) {
for ($d=$_POST["d"]; $d<=$_POST["dd"]; $d=$d+1) {
for ($e=$_POST["e"]; $e<=$_POST["ee"]; $e=$e+1) {
for ($f=$_POST["f"]; $f<=$_POST["ff"]; $f=$f+1) {
if ($a+$b+$c==$d+$e+$f) {
echo "$x) $a$b$c $d$e$f
";
$x=$x+1;}
}
}
}
}
}
}
?>