Let me start off by clarifying that(before you guys dismiss me), this is not a homework problem and I\'m not a university student. :)
EDIT Thanks to
This is a solution in Perl. rather a hack by using Regex.
Following this blog post to solve algebraic equations using regex.
we can use the following script for 3x + 2y + 5z = 40
#!/usr/bin/perl
$_ = 'o' x 40;
$a = 'o' x 3;
$b = 'o' x 2;
$c = 'o' x 5;
$_ =~ /^((?:$a)+)((?:$b)+)((?:$c)+)$/;
print "x = ", length($1)/length($a), "\n";
print "y = ", length($2)/length($b), "\n";
print "z = ", length($3)/length($c), "\n";
output: x=11, y = 1, z = 1
the famous Oldest plays the piano puzzle ends up as a 3 variable equation
This method applies for a condition that the variables are actually positive and the constant is positive.