Question

5/6 + 4/6
11/7 - 5/7
3/5 - 4/8
3/7 - 4/21 + 1/3

Answer 1

Explicação passo-a-passo:

5/6 + 4/6 = 9/6

= 3/2

11/7 - 5/7 = 6/7

3/5 - 4/8 = 3/5 - 1/2

= (6 - 5)/10

= 1/10

3/7 - 4/21 + 1/3 = (9 - 4 + 7)/21

= 12/21

= 4/7