Question

(-3):(-2):(-3)
(4):(7):(5)

Answer 1

Resposta:

Explicação passo a passo:

$\displaystyle (-3):(-2):(-3)=(\frac{-3}{-2} ):(-3)=(\frac{3}{2} ):(\frac{-3}{1} )=(\frac{3}{2} )\times (\frac{1}{-3} )=(\frac{\diagup\!\!\!\!3}{2} )\times (\frac{1}{-\diagup\!\!\!\!3} )=-\frac{1}{2}$

$\displaystyle (4):(7):(5)=\frac{4}{7} :(5)=\frac{4}{7}:\frac{5}{1} =\frac{4}{7}\times \frac{1}{5}=\frac{4\times 1}{7\times 5} =\frac{4}{35}$