Question

determine o produto dos numeros racionais abaixo :
a)$\frac{1}{2} . (\frac{3}{7} ) =$
b)$\frac{2}{5}.( \frac{-2}{5}). \frac{2}{5} =$
c)$2 \frac{1}{5}.( \frac{-3}{7})=[/tex d)[tex] \frac{13}{21}.(-2)=$
e)$( \frac{2}{5}+ \frac{3}{7}).( \frac{-4}{7}- \frac{2}{3})=$
f)(0,5+1,21).(-0,25-0,6)=
g)$\frac{2}{9} . { \frac{3}{7} [ \frac{2}{5} ( \frac{1}{3} - \frac{2}{3})]}$

Answer 1

Olá Erik

a) 1/2*3/7 = 3/14

b) 2/5 * (-2/5) * (2/5) = -8/125 

c) 11/5*(-3/7) = -33/35 

d) 13/21 * (-2) = -26/21

e) (29/35) * (-26/21) = -754/735
f) 1.71*(-0.85) = -1.4535

g) 6/63 * 2/5 * -1/2 = -2/105 

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