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