Question

1/2x3/4x2/3=?????
1/5+3/5-2/7

Answer 1

Resposta:

1°

$\frac{1}{4}$

2°

$\frac{18}{35}$

Explicação passo-a-passo:

1°

$\frac{1}{2} \times \frac{3}{4} \times \frac{2}{3}$

$\frac{1}{2} \times \frac{1}{4} \times 2$

$\frac{1}{4}$

2°

$\frac{1}{5} + \frac{3}{5} - \frac{2}{7}$

$\frac{28 - 10}{35}$

$\frac{18}{35}$

Answer 2

Resposta:

$\frac{1}{2} \times \frac{3}{4} \times \frac{2}{3} = \frac{6}{24} \\ outro \\ \frac{1}{5} + \frac{3}{2} - \frac{2}{7} = \frac{7 + 15}{10} - \frac{2}{7} \\ \frac{22}{10} - \frac{2}{7} = \frac{154 - 20}{70} = \frac{134}{70}$

Espero ter ajudado!