4 5 1 7x July 8, 2019 16 32 64 128 4 x 1 )+ 5 7x 3 5 4 7x 1 7x 2 2 2x 4 )+ 5 7x 1 4 x 1 )- 7x 5 7x 1 4 5 11 5 4 7x 1 no solution 4 7x2 1 5 5 3x 4 1 7x X 4 2x 5 7x 1 4 5 7x 1 2 2x 4x 1 1 5x 4 5 2 7x 3 5 1 7x 1 4
