2 4x 7 5x 4 July 8, 2019 16 32 64 128 4x 5y 7 5x 4y 2 5x 2 4x 7 )-( 4x 7 2 5x 7 )+ 4x 4 10.5 x 6 7 4x )+ 7 2 5x )= 45 5x 3 2 4x 7 2 49 6 1 4x )+ 7 2 5x )= 42 4x 3 5 6x 2 7 5x 4 3 3 5x 2 4x 7 2x 2 3x 4 3 4x 7 2 5x 4 5 4 3x 4 )-( 4x 7 )/ 5x 9 2 3