1 9 x 72 July 8, 2019 16 32 64 128 1 9 x 729 1 9 x 720 1 9 x 4 729 1 9 2 x 729 2 9 x 72 1 12 Solve 1 9 x 729 5 9 x 72 1 1 3 x 72 x 9 2 5x 1 )-( x 9 2 72 72 ÷ 9 1-9 математика