Use the quations 2L + 2W = Area
and L = 3W -4
Plug the second equation into the first and solve for W
2(3W-4) + 2W = A
6W - 8 + 2W= A
8W - 8 = A
8W = 8
W = 1
Then plug that into the second equation
L = 3(1) -4
L = 3 -4
L = -1
Then plug both of the answers into the first equation
2(-1) + 2(1) = A
-2 + 2 = A
0 = A
That should be the answer, but since there was no given Area, i'm not sure.
I hope this helped though!
