Вычислите (2/3)в кв.:32/135:(1/4:4/5)
2/3 в квадрате= 4/9 4/9:32/135=4/9×135/32=15/8 1/4:4/5=1/4×5/4=5/16 15/8:5/16=15/8×16/5=6