Question

1) Efetue as divisões.
alguem me ajudaaaa

Answer 1

Explicação passo-a-passo:

$a)$

$\dfrac{3}{5} \div \dfrac{3}{4}$

$\dfrac{3}{5} \times \dfrac{4}{3}$

$\dfrac{12}{15}$

$\dfrac{12 {}^{ \div 3} }{15 {}^{ \div 3} }$

$\dfrac{4}{5}$

$b)$

$\dfrac{3}{5} \div - \dfrac{2}{7}$

$\dfrac{3}{5} \times - \dfrac{7}{2}$

$- \dfrac{21}{10}$

$c)$

$- \dfrac{4}{9 } \div - \dfrac{5}{2}$

$\dfrac{4}{9} \times \dfrac{2}{5}$

$\dfrac{8}{45}$

$d)$

$- \dfrac{5}{6} \div - \dfrac{1}{4}$

$\dfrac{5}{6} \times \dfrac{4}{1}$

$\dfrac{20}{6}$

$\dfrac{20 {}^{ \div 2} }{6 {}^{ \div 2} }$

$\dfrac{10}{3}$

$e)$

$- 4 \div \dfrac{8}{3}$

$- 4 \times \dfrac{3}{8}$

$- \dfrac{12}{8}$

$- \dfrac{12 {}^{ \div 2} }{8 {}^{ \div 2} }$

$- \dfrac{6}{4}$

$- \dfrac{6 {}^{ \div 2} }{4 {}^{ \div 2} }$

$- \dfrac{3}{2}$

$f)$

$- 6 \div 5$

$- (6 \div 5)$

$- 1.2$