6x 2x 4 3y y July 8, 2019 16 32 64 128 6x 2x 4 y 3y 8 x Y 2x 4 6x 3y 12 Y 2x 4 6x 3y 12 substitution Y 2x 4 and 6x 3y 5 6x 3y 3 2x y 4 3x + 2y = 6 6xy - 4y + 6 - 9x
