Question

quy đồng các phân số sau:

 a \(\dfrac{1}{2}và\dfrac{2}{3}\)     b \(\dfrac{2}{5}và\dfrac{4}{15}\)     c \(\dfrac{5}{6}và\dfrac{3}{8}\)     d \(\dfrac{1}{4};\dfrac{3}{8}và\dfrac{5}{32}\)

Answer 1

a: 1/2=3/6

2/3=4/6

b: 2/5=6/15

4/15=4/15

c: 5/6=20/24

3/8=9/24

d: 1/4=8/32

3/8=12/32

5/32=5/32

Answer 2

`a)`

`MSC:6`

`1/2= (1 xx 3)/(2 xx 3)=3/6`

`2/3=(2 xx 2)/(3xx2)=4/6`

`b)`

`MSC:15`

`2/5= ( 2xx3)/(5xx3)=6/15`

`4/15` giữ nguyên

`c)`

`MSC:48`

`5/6= ( 5 xx 8)/(6xx8)=40/48`

`3/8=( 3xx6)/(8xx6)=18/48`

`d)`

`MSC:32`

`1/4 = (1xx8)/(4xx8)=8/32`

`3/8=(3xx4)/(8xx4)=12/32`

`5/32` giữ nguyên