Resposta:
a)
[tex] \dfrac{10 \div 10}{50 \div 10} = \LARGE\boxed{ \bf\green{ \dfrac{1}{5} }}[/tex]
b)
[tex] \dfrac{22 \div 2}{42 \div 2} = \LARGE \boxed{ \bf\green{\dfrac{ 11}{21} }}[/tex]
c)
[tex] \boxed{ \bf \blue{\dfrac{7}{29} }} \: \: \LARGE \bf\green{irredutivel} \\ \\ \bf \: Pois \: são \: números \: primos.[/tex]
[tex] \LARGE \boxed{\bf \blue{ \underline{Bons \: Estudos!}}}[/tex]
