Question

Efetue.
a. 3/4 - 1/6
b. 8/3 + 3/2
c. 2/7 + 1/5
d. 2/3 + 1/2

Answer 1

Resposta:

a)

$a) \frac{3}{4} - \frac{1}{6} = \\ \frac{(12 \div 4) \times 3}{12} - \frac{(12 \div 6 ) \times 1}{12 } = \\ \frac{3 \times 3}{12} - \frac{2 \times 1}{12} \\ \frac{9 - 2}{12} = \frac{7}{12}$

b)

$b) \frac{8}{3} + \frac{3}{2} = \\ \frac{8 \times 2}{6} + \frac{3 \times 3}{6} = \\ \frac{16 + 9}{6} = \frac{25}{6}$

b)