Question

Solve the formula P = 2l + 2w for w.

A. w=p-21

B. w=p/21

C. w=2p/2l

D. w=p-2l/2

Answer 1

P = 2l + 2w

subtract both side by 2l and divide both side by 2

P-2l=2w

w=p-2l/2

Answer 2

Welcome to Openstudy.

Answer 3

P=2l+2W
P-2l=2W
P-2l/(2)=W
W=P-2l/2
Answers D

Answer 4

@Nurali is correct, but you must be careful how you write it in one line.

\(P = 2l + 2w\)

\(P - 2l = 2w\)

\(\dfrac{P - 2l}{2} = w\)

\(w = \dfrac{P - 2l}{2}\)

\(w = (P - 2l)/2\) ( which is different from \(w = P - 2l/2\) ).

Remember that a fraction means both division and grouping.