Question

kara used the formula P=2(L+W) to find the perimeter of a photograph. She tells Jim that the length is 6 centimeters and the perimeter is 22 centimeters. How can Jim find the width of the photo?

Answer 1

P= 2 ( L+W) 
22= 2(6+ W) you plug in what you know and solve for W
22= 2(6+5)
22=2(11)
22=22

W= 5 cm