X 13 5x 7 July 8, 2019 16 32 64 128 X − 3y 13 and 5x 7y 34 5x 13 7 x 3 Solve 13 5x 7 x 5x 7 13 x answer 5x 13 x 9x 7 5x 7x 13 x X 3y 5 5x 7y 13 13 x 7 5x 10x 27 7x Ru x 5 13 13 x-7 5 x 7 = 35 X-13 5