Question

Efetue as frações: Ajuda pfv to dando 25 pontos 
a)5/7 : 2/3
b)4/5 : 3/7
c)2/9 : 7/8
d)1/6 : 5/3
e) 7/8 : 3/4

Answer 1

$a) \ \frac{5}{7}\div \frac{2}{3}=\frac{5}{7}*\frac{3}{2}=\frac{15}{14}\\ \\b) \ \frac{4}{5}\div \frac{3}{7}=\frac{4}{5}*\frac{7}{3}=\frac{28}{15}\\ \\c) \ \frac{2}{9}\div \frac{7}{8}=\frac{2}{9}*\frac{8}{7}=\frac{16}{63}\\ \\d) \ \frac{1}{6}\div \frac{5}{3}=\frac{1}{6}*\frac{3}{5}=\frac{3}{30}=\frac{1}{10}\\ \\e) \ \frac{7}{8}\div\frac{3}{4}=\frac{7}{8}*\frac{4}{3}=\frac{7}{6}$