Question

Вычислите:
а)3/14 + 5/21
б)7/0 - 0,4
в)2/3-(4/7 - 1/6)

Answer 1

а)3/14 + 5/21 =  (9+10) /42 = 19/42
б)7/(0 - 0,4) = 7/0.6 = 7/(6/10)  = 70 / 6 =35 /3 = 11 2/3
в)2/3-(4/7 - 1/6) = (28-24+7)/42 =11/42

Answer 2

спасибо)