Question

8.5/6+2.3/8. и. 1.4/5+3.11/30

Answer 1

8 5/6 + 2 3/8 = 8 20/24 + 2 9/24 = 10 29/24 = 11 9/24 = 11 3/8
Общий знаменатель 24
24 : 6 = 4 - доп.множ. к 5/6 = (5*4)/(6*4) = 20/24
24 : 8 = 3 - доп.множ. к 3/8 = (3*3)/(8*3) = 9/24
9/24 = 3/8 - сократили на 3

1 4/5 + 3 11/30 = 1 24/30 + 3 11/30 = 4 35/30 = 5 5/30 = 5 1/6
Общий знаменатель 30
30 : 5 = 6 - доп.множ. к 4/5 = (4*6)/(5*6) = 24/30
5/30 = 1/6 - сократили на 5