Question

resoulva as operações de frações.

a) 2/7 + 3/7

b) 4/9 + 5/9

c) 2/3 + 5/3

d) 7/8 + 3/8​

Answer 1

Resposta:

a) $\frac{5}{7}$

b) $1$

c) $\frac{7}{3}$

d) $\frac{5}{4}$

Explicação passo-a-passo:

a) $\frac{2}{7}+\frac{3}{7}=\frac{2+3}{7}=\frac{5}{7}$

b) $\frac{4}{9}+\frac{5}{9}=\frac{4+5}{9}=\frac{9}{9}=1$

c) $\frac{2}{3}=\frac{5}{3}=\frac{2+5}{3}=\frac{7}{3}$

d) $\frac{7}{8}+\frac{3}{8}=\frac{7+3}{8}=\frac{10}{8}=\frac{5}{4}$

Answer 2

Resposta:

2/7 + 3/7 = 5/7

4/9 + 5/9 = 9/9 = 1

2/3 + 5/3 = 7/3

7/8 + 3/8 = 10/8 = 5/4