Question

Rút gọn phân số

Answer 1

a.15/18=5/6

b.30/120=1/4

c.45/27=2/1=2

d.75/300=1/4

Answer 2

\(\dfrac{15}{18}=\dfrac{15:3}{18:3}=\dfrac{5}{6}\)

\(\dfrac{30}{120}=\dfrac{30:30}{120:30}=\dfrac{1}{40}\)

\(\dfrac{45}{27}=\dfrac{45:9}{27:9}=\dfrac{5}{3}\)

\(\dfrac{75}{300}=\dfrac{75:75}{300:75}=\dfrac{1}{4}\)

Answer 3

a)15:3/18:3=5/6

b)30:30/120:30=1/4

c)45:3/27:3=15/9

d)75:5/300:5=15/60