Question

(-7/4) : (-5/8) = (+3/10) : (-11/15) = (+4/3) : (+5/7) = (-6/5) : (+4/15) =

DIVISÃO RACIONAL ME AJUDEM PFVV ;----;​

Answer 1

Explicação passo-a-passo:

1)

$- \dfrac{7}{4} \div - \dfrac{5}{8}$

$\dfrac{7}{4} \times \dfrac{8}{5}$

$\dfrac{56}{20}$

$\dfrac{56 {}^{ \div 4} }{20 {}^{ \div 4} }$

$\dfrac{14}{5}$

2)

$\dfrac{3}{10} \div - \dfrac{11}{15}$

$\dfrac{3}{10} \times - \dfrac{15}{11}$

$- \dfrac{45}{110}$

$- \dfrac{ 45 {}^{ \div 5} }{110 {}^{ \div 5} }$

$- \dfrac{9}{22}$

3)

$\dfrac{4}{3} \div \dfrac{5}{7}$

$\dfrac{4}{3} \times \dfrac{7}{5}$

$\dfrac{28}{15}$

4)

$- \dfrac{6}{5} \div \dfrac{4}{15}$

$- \dfrac{6}{5} \times \dfrac{15}{4}$

$- \dfrac{90}{20}$

$- \dfrac{90 {}^{ \div 10} }{20 {}^{ \div 10} }$

$- \dfrac{9}{2}$