3 6 2x ≥ 4x 12 July 8, 2019 16 32 64 128 6 2 3 2x 20 12 4x 1 4 12 4x 3 6 2x 3 4x 12 1 2x 6 3x + 2y = 6 2 3(4x-3)=6x-8 5