3y 7 8y 5 July 8, 2019 16 32 64 128 − 2x 3y 7 5x 8y − 2 Solve 20x 3y 7 8y 15x 5 3y 5 8y 2y 7 4y 3 - 7y 5y - 3 3y = 7
