Question

faça as operações com frações

a)
$\frac{1}{2} - \frac{1}{4}$


B)
$\frac{3}{4} - \frac{2}{3}$


c)
$\frac{8}{5 } - \frac{1}{3}$


d)
$\frac{ 5}{6} - \frac{2}{6}$


e)
$\frac{6}{4} - \frac{1}{7} + \frac{1}{2}$


f)
$\frac{2}{9} + \frac{1}{8} - \frac{1}{6}$


g)
$\frac{1}{2} + 3$


ajuda eu ae fiquei 20 minutos arrumando a conta •́ ‿ ,•̀​

Answer 1

Olá meu parça !!!

Vamos calcular passo a passo;

$Pergunta :$

1 - Faça as operações com frações !

$Resposta:$

Calcule da seguinte forma !

A)

$\textcolor{blue}{ \frac{1}{2} - \frac{1}{4} }$

$\textcolor{blue}{ \frac{1 \times 2}{2 \times 2} - \frac{1}{4} }$

$\textcolor{blue}{ \frac{2}{4} - \frac{1}{4} }$

$\textcolor{blue}{ \frac{2 - 1}{4} }$

$\boxed{{\textcolor{red}{ \frac{1}{4} }}}$

B)

$\textcolor{blue}{ \frac{3}{4} - \frac{2}{3} }$

$\textcolor{blue}{ \frac{3 \times 3}{4 \times 3} - \frac{2 \times 4}{3 \times 4} } \: \boxed{{\textcolor{red}{ multiplique \: cruzado }}}$

$\textcolor{blue}{ \frac{9}{12} - \frac{8}{12} }$

$\textcolor{blue}{ \frac{9 \: - \: 8}{12} }$

$\boxed{{\textcolor{red}{ \frac{1}{12} }}}$

C)

$\textcolor{blue}{ \frac{8}{5} - \frac{1}{3} }$

$\textcolor{blue}{ \frac{8 \times 3}{5 \times 3} - \frac{1 \times 5}{3 \times 5} } \: \boxed{{\textcolor{red}{ multiplique \: cruzado \: }}}$

$\textcolor{blue}{ \frac{24}{15} - \frac{5}{15} }$

$\textcolor{blue}{ \frac{24 - 5}{15} }$

$\boxed{{\textcolor{red}{ \frac{19}{15} }}}$

D)

$\textcolor{blue}{ \frac{5}{6} - \frac{2}{6} }$

$\textcolor{blue}{ \frac{5 \: - \: 2}{6} }$

$\textcolor{blue}{ \frac{3}{6} }$

$\boxed{{\textcolor{red}{ \frac{1}{2} }}}$

E)

$\textcolor{blue}{ \frac{6}{4} - \frac{1}{7} + \frac{1}{2} }$

$\textcolor{blue}{ \frac{6 \times 7}{4 \times 7} - \frac{1 \times 4}{7 \times 4} + \frac{1 \times 14}{2 \times 14} } \boxed{{\textcolor{red}{ multiplique \: cruzado }}}$

$\textcolor{blue}{ \frac{42}{28} - \frac{4}{28} + \frac{14}{28} }$

$\textcolor{blue}{ \frac{42 \: - \: 4 \: + \: 14}{28} }$

$\textcolor{blue}{ \frac{52}{28} }$

$\boxed{{\textcolor{red}{ \frac{13}{7} }}}$

F)

$\textcolor{blue}{ \frac{2}{9} + \frac{1}{8} - \frac{1}{6} }$

$\textcolor{blue}{ \frac{2 \times 8}{9 \times 8} + \frac{1 \times 9}{8 \times 9} - \frac{1 \times 12}{6 \times 12} } \boxed{{\textcolor{red}{ multiplique \: cruzado}}}$

$\textcolor{blue}{ \frac{16}{72} + \frac{9}{72} - \frac{12}{72} }$

$\textcolor{blue}{ \frac{16 \: + \: 9 \: - \: 12}{72} }$

$\boxed{{\textcolor{red}{ \frac{13}{72} }}}$

G)

$\textcolor{blue}{ \frac{1}{2} + 3}$

$\textcolor{blue}{ \frac{1}{6} + \frac{6}{2} }$

$\boxed{{\textcolor{red}{ \frac{7}{2} }}}$

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$\boxed{{\textcolor{red}{ Bons \: Estudos \: !!!}}}$