Question

ВЫПОЛНИТЕ ДЕЙСТВИЯ:(1/14+2/21)*(5*1/2-2*1/14)

Answer 1

(1/14+2/21)*(5*1/2-2*1/14) = (3+4)/42*(11/2-29/14)= 7/42*48/14=4/7

Answer 2

1) 1/14+2/21=(3+4)/21=7/42=1/6
2) 5/2-2/14=(35-2)/14=33/14
3) 1/6*33/14=33/84=11/28