3 7 x 1 )= 5 4x July 8, 2019 16 32 64 128 3 5x 7 x 4 1 2 5 4x 8 3 4x 1 x 1 5 7 4 2x 3 7 12 x 4 1 5 4x 5 13 3x 7 x 1 or 4x 5 3x 3 3 7 x 1 4x4 5 as a fraction 3 x 1 )/ 5 7 4x 6 7 3 1 x )= 5 2 3 4x 3 7x 1 4x 5 3 x 2 )+ 4x 5 7 x 1 )- 6 4x 3 x 1 5 5x 7 3 x 7 )= 5 x 1 )- 4x comprobaciĆ³n