Question

Efetue as operações com fração:
A) 2/5 + 7/5 - 4/5

B) 5/12 + 7/6

Answer 1

A)

$\frac{2}{5} + \frac{7}{5} - \frac{4}{5} = \frac{9}{5} - \frac{4}{5} = \frac{5}{5}= 1$

B)

12, 6 | 2

6, 3 | 2

3, 3 | 3

 1, 1 | 2*2*3 = 12

$\frac{5}{12} + \frac{14}{12}$ = $\frac{19}{12}$