Question

Determine os produtos: a) (+2/5).(-1/3) b) (-3/4).(-2/7) c) (-3/4).(+5/6) d) (-0,5).(-1,25) e) (-0,12).(+3,4)

Answer 1

Resposta:

$\text{Leia abaixo}$

Explicação passo-a-passo:

$a)\: \dfrac{2}{5} \times \dfrac{-1}{3} = \dfrac{-2}{15}$

$b)\: \dfrac{-3}{4} \times \dfrac{-2}{7} = \dfrac{6}{28} = \dfrac{3}{14}$

$c)\: \dfrac{-3}{4} \times \dfrac{5}{6} = \dfrac{-15}{24} = \dfrac{-5}{8}$

$d)\: \dfrac{-5}{10} \times \dfrac{-125}{100} = \dfrac{625}{1000} = \dfrac{5}{8}$

$e)\: \dfrac{-12}{100} \times \dfrac{34}{10} = \dfrac{-408}{1000} = \dfrac{-51}{125}$