Question

determine o produto: a) (7/4) x (-8/3)= b) (3/5) x (-4/6) x (+5) =

Answer 1

a)
$\dfrac{7}{4} \times \dfrac{-8}{3} \\\\\\ \dfrac{-56}{12}=\boxed{ \frac{-14}{3} }$


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b)
$\dfrac{3}{5} \times \dfrac{-4}{6}\times \dfrac{5}{1}\\\\\\ \dfrac{-60}{30}=\boxed{ \frac{-2}{1} }$


Forte abraço!

Answer 2

a)(7/4 x (-8/3) = - 56/12 simplifica por 2 =- 28/6 simplifica 2 = -14/3
b)(3/5) x (-4/6) x (+5) = 
     = -12 / 30 x (+5 ) 
     = - 60 / 30 simplifica  por 30 = -2 / 1 = -2