(5\6+7\15)*3 решите пжжжжж

Question

(5\6+7\15)*3 решите пжжжжж

Answer 1

(5/6 + 7/15) * 3 = 3,9

1)5/6 + 7/15 = 25/30 + 14/30 = 39/30 = 13/10= 1,3
2) 1,3 * 3 =3,9

Answer 2

(5/6+7/15)*3=(50/60+28/60)*3=78/60*3=3,9