Question

Alguém me ajuda por favor:​

Answer 1

a)

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

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

$\frac{1 \times 3 \times 1}{2 \times 2 \times 4} = \frac{3}{16}$

b)

$2. ( - \frac{ 2 }{5} ) \div \frac{1}{5}$

$- 2 \times \frac{2}{5} \div \frac{1}{5}$

$- 2 \times \frac{2}{5} \times 5$

O valores são simplificados, então:

$- 2 \times 2 = 4$

c)

$(\frac{1}{3} + \frac{2}{1} ) \div \frac{1}{2}$

$\frac{7}{3} \div \frac{1}{2}$

$\frac{7}{3} \times 2 = \frac{14}{3}$

d)

$\frac{1 + \frac{1}{3} }{3}$

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

$\frac{ \frac{4}{3} }{3} = \frac{4}{9}$

Bons estudos!