Question

Please help me !!! and explain your answer !!!
solve for L :

Answer 1

L =
`(P)/(2)` - W

P = 2L + 2W = 2(L + W) → ( take out common factor of 2)

divide both sides by 2

`(P)/(2)` = L + W

subtract W from both sides

`(P)/(2)` - W = L