SOLUTION: you can find the perimeter of rectangle if you subtract the width from the length, add 7 inches, and multiply the result by 4. c.Solve the equation in part(b)for the variable l.

Algebra ->  Linear-equations -> SOLUTION: you can find the perimeter of rectangle if you subtract the width from the length, add 7 inches, and multiply the result by 4. c.Solve the equation in part(b)for the variable l.      Log On


   

Question 174483This question is from textbook algebra 1
: you can find the perimeter of rectangle if you subtract the width from the length, add 7 inches, and multiply the result by 4.
c.Solve the equation in part(b)for the variable l. This question is from textbook algebra 1

Answer by rapaljer(4671) About Me  (Show Source):
You can put this solution on YOUR website!
2L +2w=4(L-w+7)
2L + 2w = 4L - 4w + 28

In order to solve for the variable L, you must get all the L terms to one side. I recoommend to subtract 2L from each side, leaving
2w = 2L - 4w + 28

Next add +4W and -28 to each side:
2w + 4w - 28 = 2L
6w - 28 = 2L

Finally, divide both sides by 2:
L = 3W - 14

R^2