Question

2 efetue as divisões
a) 5/2 : (-1/4)
b) (-4/7) : (-3/7)
c) (- 4,0) : (0,5)
d) -5/12 : (-7/10)​

Answer 1

Explicação passo-a-passo:

A)

$\dfrac{5}{2} \div - \dfrac{1}{4}$

$\dfrac{5}{2} \times - \dfrac{4}{1}$

$- \dfrac{20}{2}$

$- 10$

B)

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

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

$\dfrac{28}{21}$

$\dfrac{28 {}^{ \div 7} }{21 {}^{ \div 7} }$

$\dfrac{4}{3}$

C)

$- 4.0 \div 0.5$

$- 8$

D)

$- \dfrac{5}{12} \div - \dfrac{7}{10}$

$\dfrac{5}{12} \div \dfrac{10}{7}$

$\dfrac{50}{84}$

$\dfrac{50 {}^{ \div 2} }{84 {}^{ \div 2} }$

$\dfrac{25}{42}$