Question

6. . Resolva as operações simplificando o resultado quando for possível:

a) 3/4 + 4/7 = b) 5/2 - 1/6 =

c) 7/3 – 5/12 = d) 3/8 + 7/12 =

Answer 1

Resposta:

A)37/28

B)7/3

C)23/12

D)23/24

Explicação passo-a-passo:

a)4×7=28 3×7=21= 21/28

7×4=28 4×4=16= 16/28

16+21=37/28

b)2×6=12 5×6=30=30/12

2×6=12 2×1=2= 2/12

30-2=28

28/12÷4=7/3

c)3×4=12 7×4=28= 28/12

28-5=23/12

d)8×3=24 3×3=9 = 9/24

12×2=24 7×2=14 = 14/24

9+14=23/24