The formula for the perimeter of a rectangle is p=2(l+w).

Question

Part B. In two or more complete sentences, describe the process you followed while isolating the variable w in the equation p=2(l+w).

Answer 1

To isolate the variable w in the equation p=2(l+w), first, I distributed the 2 to the terms inside the parentheses to get p=2l+2w. Then, I subtracted 2l from both sides to get p-2l=2w. Finally, I divided both sides by 2 to get w=(p-2l)/2.