Question

Выполните действия
7/18•9/14+1/3•6/7
3.3/4•2/5-3.6/25•5/27
Заранее спасибо!

Answer 1

7/18•9/14+1/3•6/7 = 1/2*1/2 + 2/7 = 1/4 + 2/7 = 3/14 + 4/14 = 7/14 = 1/2
3.3/4•2/5-3.6/25•5/27 = 15/4*2/5 - 81/25*5/27 = 3/2-3/5 = 15/10 - 6/10 = 9/10

Answer 2

Спасибо!