Question

Como se faz? Essa questão pf

Answer 1

a)  ( 2+1/2+1/8): 3/8 + 1=
     $( \frac{16+4+1}{8} ): \frac{3}{8} +1=$
   
    $\frac{21}{8} * \frac{8}{3}+1= 7+1 = 8$
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b) (2+1/2+1/8) : (3/8+1) =
            $\frac{21}{8} : \frac{11}{8} = \frac{21}{8}* \frac{8}{11}= \frac{21}{11}$
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a) [9/10 : (2/5+1/2) : 3/4 - 1] :2/9=
     
  $[ \frac{9}{10}:( \frac{4+5}{10}): \frac{3}{4}-1] * \frac{9}{2} =$

$[ \frac{9}{10}: \frac{9}{10}: \frac{3}{4} -1]* \frac{9}{2} =$

$[1* \frac{4}{3}-1]* \frac{9}{2}=$

$[ \frac{4}{3}-1]* \frac{9}{2}= \frac{1}{3}* \frac{9}{2}= \frac{3}{2}$