4 5 =- 4 7x July 8, 2019 16 32 64 128 4 5 3x 4 )= 7x 8 4x 4 5 7x )+ 4 4 6x 5 )- 5 7x 4 )= x 4 3x 5 5 x 4 7x (- 7x 5x 4 5 7x 4 5 9x 4 5 4 7x 5 6 0 6 4 7x5 5 4 7x4 5 4 5x5 5 4 7x4 5 5 x 7 = 35 4 + 4 =5 4 5 x 7
