Question

como resolver as frações
a) 2/7×7/5
b) 7/5+10/14
c) 3/8÷1
d) 3 2/5÷1 2/3

Answer 1

a) $\frac{2}{7} . \frac{7}{5} = \frac{14}{35} = \frac{2}{3}$
b) $b) \frac{7}{5} + \frac{10}{14} = \frac{98}{70} + \frac{50}{70} = \frac{148}{70} = 2 \frac{8}{70} = 2\frac{4}{35}$
$c) \frac{3}{8} / 1 = \frac{3}{8}. \frac{1}{8} = \frac{3}{64}$
$d) 3 \frac{2}{5} / 1 \frac{2}{3} = \frac{17}{5} . \frac{5}{3} = \frac{17}{5}. \frac{3}{5} = \frac{51}{25} = 2 \frac{1}{25}$