6 7 х 3 9 July 8, 2019 16 32 64 128 6 7 x 3 9 6 7 x 2 3 9 6 7 3 9 6 7 3 9 5 6 3 7 x 3 1 9 6 7 x 9 3 rug 6 7-х=3 9 6х+3 7=73 9 6' 7 x 9'
