4 x 7 19 July 8, 2019 16 32 64 128 19 8 x 4 7 7 4 x 2 6 19 4 x 7 19 x 11 4 20 x 7 19 4 (- 4x 7 11x 190 4 x 7 2 35 =- 19 2 x 4 )+ 7 19 4 x 5 )-( x 7 )=- 19 4 x 22 7 x 196 3 x 7 )- 19 4 2x 5 Solve 4 7 x 19 7 4 x 7 2 4x 2 56x 196