Question

Alguém resolve essa expressão pfv ?

Answer 1

$3 \frac{2}{5}:(2 \frac{1}{3} +1 \frac{5}{7} ) \\ \\ \frac{5*3+2}{5} :( \frac{3*2+1}{3} + \frac{7*1+5}{7} ) \\ \\ \frac{15+2}{5} :( \frac{6+1}{3} + \frac{7+5}{7} \\ \\ \frac{17}{5} :( \frac{7}{3} + \frac{12}{7} ) \\ \\ \frac{17}{5} : (\frac{49+36}{21}) \\ \\ \frac{17}{5} : \frac{85}{21} \\ \\ \frac{ \frac{17}{5} }{ \frac{85}{21} } \\ \\ \frac{17}{5} * \frac{21}{85} \\ \\ \frac{1}{5} * \frac{21}{5} \\ \\ [tex] \frac{21}{25}$