4 7 8 2 1 6 July 8, 2019 16 32 64 128 (- 7 8 1 целая 1 6 )* 2 4 4 1 4 2 7 8 x 1 61 Simplify 6 7 8 2 4 )+ 1 7 8 4 ✕ 6 2 1 6 1 2 4 7 8 in fraction 6 7 8 minus 2 1 4 6 7 8 plus 2 1 4 2 3 7 8 tetraaminophenazine 1 4 6 9 tetraone