Question

determine o quociente entre os números racionais

a) (5/2):(1/4)=

b)(3/4):(-5/9)=

c)(1/4):(1/3)=

d)(-3/5):(-2/4)=
​

Answer 1

Resposta:

$a) \: \frac{5}{2} \div \frac{1}{4} \\ \\ \frac{5}{2} \times 4 \\ \\ \frac{20}{2} \\ \\ = 10$

$b) \: \frac{3}{4} \div ( - \frac{5}{9} ) \\ \\ - \frac{3}{4} \div \frac{5}{9} \\ \\ - \frac{3}{4} \times \frac{9}{5} \\ \\ = - \frac{27}{20}$

$c) \: \frac{1}{4} \div \frac{1}{3} \\ \\ \frac{1}{4} \times 3 \\ \\ = \frac{3}{4}$

$d) \: (- \frac{3}{5} ) \div ( - \frac{2}{4} ) \\ \\ \frac{3}{5} \div \frac{2}{4} \\ \\ \frac{3}{5} \times \frac{4}{2} \\ \\ \frac{12 \div (2)}{10 \div (2)} \\ \\ = \frac{6}{5}$