Explain why the equation 2L + 2W = 4 (L - W + 7) is true for the rectangle

P = 2W + 2L step is keep 2L in one side of equation, and move every thing else to the other side. In moving any quantity from one side to other, change the sign. (equivalent of adding or subtracting equal quantity from both sides of equation). 2L = P - 2W divide both sides by 2: L = p/2 - w Step is the same as solving X in equation of 8 = 2X + 16 2X = 8 - 16 = 8 X = 4. But, here you solve one variable in terms of other variables. 9/9/2013 | Parviz F.

you can find the perimeter of rectangle if you subtract the width from the length, add 7 inches, and multiply the result by 4. b. Explain the equation 2L + 2w=4 (L-w+7)