Question

Efetue as seguintes operações :
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Answer 1

Olá!!  :)

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ITEM (A):

$\sf \Rightarrow \ \ \frac{1}{3} \ + \ \frac{2}{4} \ + \ \frac{2}{6} \\\\ \Rightarrow \ \ \frac{4 \ + \ 6 \ + \ 4}{12} \\\\ \Rightarrow \ \ \frac{14}{12} \\\\ \Rightarrow \ \ \frac{14^{:2}}{12^{:2}} \\\\ \Rightarrow \ \ \frac{7}{6}$

ITEM (B):

$\sf \Rightarrow \ \ (\frac{4}{3})^{2} \ + \ ( \ \sqrt{ \frac{25}{64}} \ ) \\\\ \Rightarrow \ \ \frac{16}{9} \ + \ \frac{5}{8} \\\\ \Rightarrow \ \ \frac{128 \ + \ 45}{72} \\\\ \Rightarrow \ \ \frac{173}{172}$

ITEM (C):

$\sf \Rightarrow \ \ \frac{3}{5} \ . \ \frac{2}{3} \ + \ \frac{4}{5} \\\\ \Rightarrow \ \ \frac{6}{15} \ + \ \frac{4}{5} \\\\ \Rightarrow \ \ \frac{6 \ + \ 12}{15} \\\\ \Rightarrow \ \ \frac{18}{12} \\\\ \Rightarrow \ \ \frac{18^{:6}}{12^{:6}} \\\\ \Rightarrow \ \ \frac{3}{2}$

ITEM (D):

$\sf \\\\ \Rightarrow \ \ 0,3 \ - \ \frac{4}{5} \ + \ \frac{1}{2} \ - \ 1,8 \\\\ \Rightarrow \ \ \frac{3}{10} \ - \ \frac{4}{5} \ + \ \frac{1}{2} \ - \ \frac{18}{10} \\\\ \Rightarrow \ \ \frac{3 \ - \ 8 \ + \ 5 \ - \ 18}{10} \\\\ \Rightarrow \ \ - \frac{18}{10} \\\\ \Rightarrow \ \ - \frac{18^{:2}}{10:^{2}} \\\\ \Rightarrow \ \ - \frac{9}{5}$

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Espero ter ajudado, bons estudos!!  :)

•   ∫∫   Ajuda fornecida por Kimberly Carlos   ∫∫