4\5:7 = (4/5) divided by 7 = 4/5 * 1/7 = 4/35
13\51-3 = 13/51 - 3 = 13/51 - 3/1 = 13/51 - 153/51 = (13-153)/51 = -140/51
Итак, результат равен:4/35: -140/51
4\5:7 = (4/5) divided by 7 = 4/5 * 1/7 = 4/35
13\51-3 = 13/51 - 3 = 13/51 - 3/1 = 13/51 - 153/51 = (13-153)/51 = -140/51
Итак, результат равен:
4/35: -140/51