The length of a rectangle is 5 less than 3 times the width. If the perimeter is 54 units, what is the length and the width?
width ---- x
length ---- 3x-5
solve for x .....
2x + 2(3x-5) = 54
length ---- 3x-5
solve for x .....
2x + 2(3x-5) = 54