5 4x 7 12x July 8, 2019 16 32 64 128 5 (- 4x 7 )+( 12x 20 4x 5 2 x 3 )= 12x 7 12x 4 4x 5 =- 7 5 x 7 = 35 5 x 5 x 5 x 5 x 5
