6. In each of the following, find an equivalent form of the rational number having a common denominator.
(i) 3/4 and 5/12
(ii) 2/3, 7/6 and 11/12
(iii) 5/7, 3/8, 9/14 and 20/21
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Given rational numbers are :
7
5
,
8
3
,
14
9
and
21
20
Now, LCM of 7, 8, 14 and 21 is 168
∴
7
5
=
7×24
5×24
=
168
120
8
3
=
8×21
3×21
=
168
63
14
9
=
14×12
9×12
=
168
108
21
20
=
21×8
20×8
=
168
160
Hence, the equivalent form is
168
120
,
168
63
,
168
108
and
168
160
respectively.
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