5 7x 4x 2 6x July 8, 2019 16 32 64 128 7x 5 4x 5 )- 2 6x 7 )= 1 2x 5 7x 4 13 4x 2 6x 8 7x 5 6x 3 4x 2 3x 7x 2 2 )-( 4x 2 5 6x 7 − 5(7 − 2x) = 6x − 4 5 x 7 = 35