Fractions - Lowest Common Denominator

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Practice

Find the lowest common denominator for the fractions given below.
a)    
1
4
and
2
10

    LCD = 20

b)    
1
3
and
1
7

    LCD = 21

c)    
3
7
and
5
8

    LCD = 56

d)    
2
4
and
3
8

    LCD = 8

e)    
6
9
and
4
12

    LCD = 36

f)    
1
2
and
2
4

    LCD = 4