8 x 3 9 2x July 8, 2019 16 32 64 128 8 x 7 )- 3 2x 9 )= 15 3 8 x )+ 9 6 2x 7 8 9 x =( 2 3 2x Solve 8 x 3 9 2x 4 x 8 3 2x 9 8 x 3 )+ 9 5 2x 9 8x 3 9 2x solve and check 8x 3 9 2x solve 8x 3 9 2x class 7 8x 3 9 2x check 7 (- x 3 )+ 9 (- 2x 8 10 x 3 )+ 8 9 2x 6 8 x 3 )- 2x 3x 9 5x x 8 9 3 2x 3 8 9 2x 32 3 x