P = 2L + 2W
20 = 2(5W + 4) + 2W
20 = 10W + 8 + 2W
20 - 8 = 12W
12 = 12W
1 = W
The length of a certain rectangle is 4 m greater than five times it's width. What are the dimensions of the rectangle if its perimeter is 20m??? please help i have no idea how to do this!
2 answers
thank you!