Question

7/8+4/5=7/8 + 45/10=

Answer 1

Resposta:

a) $\frac{67}{40}$

b) $\frac{43}{8}$

Explicação passo a passo:

a) $\frac{7}{8}+\frac{4}{5}=\frac{35}{40}+\frac{32}{40}=\frac{35+32}{40}=\frac{67}{40}$

b) $\frac{7}{8}+\frac{45}{10}=\frac{7}{8}+\frac{9}{2}=\frac{7}{8}+\frac{36}{8}=\frac{7+36}{8}=\frac{43}{8}$

Answer 2

7/8+4/5
Mmc (8,5)= 40
8,5: 2
4,5: 2
2,5: 2
1,5: 5
1,1
= 2^3 . 5
= 40

= (5.7+8.4)/40
= (35+32)/40
= 67/40