Whats the easiest way to work this out.
m = z + 4
n = y + e
m + n = z + 4 + y + e = (z+e) + (4+y) = 10 + (-5) = 5
Thanks. I think I got the whole addition table thing wrong.
I was doing summation of a row shows match the number of left and summation of columns should have match the top number . And then trying to solve the equation.