[tex]\green{\square}[/tex] Calculando, iremos obter: [tex] \boxed{\mathbf{ \frac{9}{12} \: e \: \frac{10}{12} }}[/tex]. É bem simples, apenas dividimos o denominador e numerador.
[tex] \large\boxed{\begin{array}{lr}\mathbf{ \frac{9}{12} = \frac{9 \div 3}{12 \div 3} = \frac{3}{4} }\end{array}}[/tex]
[tex] \large\boxed{\begin{array}{lr}\mathbf{ \frac{10}{12} = \frac{10 \div 2}{12 \div 2} = \frac{5}{6} }\end{array}}[/tex]
[tex] \large\boxed{\begin{array}{lr}\mathbf{ \frac{3}{4} \: e \: \frac{5}{6} \rightarrowtail \frac{9}{12} \: e \: \frac{10}{12} }\end{array}}[/tex]
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