Выполните вмножение 1 1/4×1 1/5 ,21/2×2 4/5, 2 1/10×2 1/7, 4 1/6×1 2/5,1 4/7×2 6/11, 1...

Question

Выполните вмножение 1 1/4×1 1/5 ,21/2×2 4/5, 2 1/10×2 1/7, 4 1/6×1 2/5,1 4/7×2 6/11, 1 1/5×2 11/12, 7 1/2×7 1/15, 7 5/9×1 1/17.

Answer 1

11/20
21*4/5=84/5
1/5*2*1/7=2/35
4*1/3*1/5=4/16
48/77
1/5*11/6=11/30
7*1*7*7/1*2*1*5=49/10
7*5*11/1*9*17=385/153