Question

efetue
4/10+1/10+3/10
5/6+1/6
8/6+6/6
3/5+1/5
7/9-5/9
9/5-2/5
5/6-1/6
5/5-2/5
​

Answer 1

Primeiro divisões e multiplicações, depois adições e subtrações

A) 4/10+1/10+3/10 =

0.4+0.1+0.3 =

0.8

B) 5/6+1/6 =

0.8+0.2 =

1

C) 8/6+6/6 =

1.3+1 =

2.3

D) 3/5+1/5 =

0.6+0.2 =

0.8

E) 7/9-5/9 =

0.7-0.5 =

0.2

F) 9/5-2/5 =

1.8-0.4 =

1.4

G) 5/6-1/6 =

0.8-0.2 =

0.6

H) 5/5-2/5 =

1-0.4 =

0.6

Answer 2

Resposta:

4/10+1/10+3/10 = 8/10

5/6+1/6 = 1

8/6+6/6 = 14/6

3/5+1/5 = 4/5

7/9-5/9 = 2/9

5/6-1/6 = 4/6

5/5-2/5 = 3/5

Explicação passo-a-passo:

$\frac{4}{10} + \frac{1}{10} + \frac{3}{10} \\ = \frac{4 + 1 + 3}{10} \\ = \frac{8}{10}$

$\frac{5}{6} + \frac{1}{6} \\ = \frac{5 + 1}{6} \\ = \frac{6}{6} = 1$

$\frac{8}{6} + \frac{6}{6} \\ = \frac{8 + 6}{6} \\ = \frac{14}{6}$

$\frac{3}{5} + \frac{1}{5} \\ = \frac{3 + 1}{5} \\ = \frac{4}{5}$

$\frac{7}{9} - \frac{5}{9} \\ = \frac{7 - 5}{9} \\ = \frac{2}{9}$

$\frac{5}{6} - \frac{1}{6} \\ = \frac{5 - 1}{6} \\ = \frac{4}{6}$

$\frac{5}{5} - \frac{2}{5} \\ = \frac{5 - 2}{5} \\ = \frac{3}{5}$