Resposta :
Resposta:
A)6/9 + 3/9 = 9/9 ---> 1
B) 12/30 + 5/30 = 17/30
C)10/12 - 10/12 = 0
D) 3/6 + 2/6 = 5/6
E) 6/30 + 6/30 - 6/30 = 12/30 - 6/30 = 6/30 --> 1/5
F) 8/36 - 1/36 + 9/36 = 7/36 + 9/36 = 16/36 ---> 4/9
G)20/80 - 20/80 + 16/80 = 16/80 ---> 1/5
H) 2 1/4
I) 2 4/4 - 1/4= 2 3/4
J)2 1/5 - 6/7 = 2 7/35 - 30/35 = 1 42/35 - 30/35 = 1 12/35
Explicação passo-a-passo: