More on Linear Equations & Systems

Question

The formula for perimeter of a rectangle is given by: P=2l+2w Rearrange the formula to solve for w

Answer 1

If P = 2L + 2W

=> 2W = P - 2L

=> W = (P - 2L) / 2 or, equivalently, P/2 - L

This is rearranging to make W the subject of the equation. Can't solve for W without being given some numbers!