Question

faltando o numerador e o denominador simplifique as frações númericas 70/20=
                                                                                                         

Answer 1

$\boxed{\frac{70}{20}=\frac{70\div10}{20\div10}=\frac{7}{2}}$

Answer 2

$\dfrac{70}{20} \ \dfrac{\div}{\div}\dfrac{10}{10} =\ \dfrac{7}{2} \\ \\ \\ \\ \dfrac{80}{200} \ \dfrac{\div}{\div}\dfrac{40}{40} =\ \dfrac{2}{5}$


$\dfrac{20}{18} \ \dfrac{\div}{\div} \dfrac{2}{2}= \ \dfrac{10}{9}$