Question

11) Efetue as operações abaixo:
a) (+1/3): (+2/3) =
b) (+4/7): (-2/5) =
c) (-3/5) : (-3/7) =
d) (+5): (-3/2) =
e) (+3).(-1/5)
f) (-2/3). (+1/5) =
g) (-7/3). (-3/7) =
h) -1 -3/4 =
i) (-3/5) + (1/2) =
urgente​

Answer 1

$a) \frac{1}{3}:\frac{2}{3}= \frac{1}{3}*\frac{3}{2}= \frac{3}{6}\\\\b) \frac{4}{7} :\frac{-2}{5}=\frac{4}{7}*\frac{5}{-2}=\frac{20}{-14}\\\\c)\frac{-3}{5} :\frac{-3}{7}=\frac{-3}{5}*\frac{7}{5}=\frac{-21}{25}\\\\d)\frac{5}{1} :\frac{-3}{-2} =\frac{5}{1}*\frac{2}{-3}=\frac{10}{-3}\\\\e)\frac{3}{1}*\frac{-1}{5}=\frac{-3}{5}\\\\f)\frac{-2}{3}*\frac{1}{5}=\frac{-2}{15}\\\\g)\frac{-7}{3}*\frac{-3}{7}=\frac{21}{21}\\\\h)-1-\frac{3}{4}=\frac{7}{4}\\\\i)\frac{-3}{5}+\frac{1}{2}=\frac{-1}{10}$