We have two solutions for you.
The way I would solve this is to first give variable names to the two
things we want to find: the length L and the width W.
The perimeter is 128 so:
128 = L + W + L + W
And the length is 8 more than the width so:
L = W + 8
That last line means that wherever you see L, you can substitute "W + 8". So let's do that in the first equation:
128 = (W + 8) + W + (W + 8) + W
Can you solve it now?
Stephen La Rocque>