4 x 5 8 7 x 4 2 July 8, 2019 16 32 64 128 8 x 3 )- 5 2x 4 )= 6x 7 x 4 5 x 4 )- 8 4 x )= 25 3 7 x )+ 144 1 2 3 5 x 8 7 4 2 5 x 4 (4 5-x)×5 8=8 7 8 4 × (-5 7) 5 x 7 = 35
