3 7 x 7 1 July 8, 2019 16 32 64 128 3 7 x 7 10 3 7 x 7 12 3 7 x 7 15 3 7 x 7 11 3 7 x 17 7 3 7 x 17 7 solve 3 7 x 14 7 3 4 7 x 7 10 3 7 8 x 7 1 2 3 1 7 x 7 11 7 3 5 x 7 1 5 3 7 8 x 1 7 9 3 7 х 2 1 7 3 7 x 100 3 x 7 )= 18
