Y 2x 4 6x 3y 12 July 8, 2019 16 32 64 128 Y 2x 4 6x 3y 12 substitution To solve simultaneous equations 2x y 4 and 6x 3y 12 3x + 2y = 6 2x + y = 4 6xy - 4y + 6 - 9x
