Question

вычислите 2/5*1/4*5/6 2/3*6/7*7/8

Answer 1

2/5 • 1/4 • 5/6 = 1/2 • 1/6 = 1/12
2/3 • 6/7 • 7/8 = 2 • 1/4 = 1/2