15t-(t-4)           -6(v+1)+v             6(5-z) + 2z
15t - t + 4          -6v + -5 + v           30 - 6z + 2z
14t + 4            -6v + v + 5           30 - 8z  Â
                -5v + 5
~batmans wife dun dun dun