6 x 4 4 8 4 July 8, 2019 16 32 64 128 4 6 x 4 4 8 4 3x 5 1 6x 6 4x 4 8 6 x 8 1 4 x 4 3 4 3 4 (- 5x 8 )=- 6 x 4 )+ 1 4x 6 x 4 4 8 divided by 4 simplified 6 x 4 4 8 divided by 4 X 6 4 x 3 4 5x 4 8 X 3 y 4 4 5x 6 y 8 4 by substitution method 4x 4 8 x 4 5 x 6 4 6 + 4 = 4 6 8 x 4