3y 18 6x 8 2y 7x 4x July 8, 2019 16 32 64 128 2) 4x - y = 7 8 - 3y = 18 6 3x + 2y = 6 2) 4x - y = 7 8 8x - 3y = 18 6 4x - y = 7 8 8x - 3y = 18 6
