Đáp án:
a) $\frac{4}{12}$ = $\frac{1}{3}$
b) $\frac{15}{60}$ = $\frac{1}{4}$
c) $\frac{-4}{12}$ = $\frac{-1}{3}$
d) $\frac{-14}{-28}$ = $\frac{1}{2}$
e) $\frac{35}{140}$ = $\frac{1}{4}$
f) $\frac{-15}{-25}$ = $\frac{3}{5}$
g) $\frac{-16}{-24}$ = $\frac{2}{3}$
h) $\frac{42}{-28}$ = $\frac{-3}{2}$
BẠN THAM KHẢO NHA!!!