Answer :
The lowest common mulitple of 4 and 3
Therefore,
the lcm of 3 and 4 is 2 x 2 x 3 = 12
Hence the common denominator is 12

The lowest common mulitple of 4 and 3
Therefore,
the lcm of 3 and 4 is 2 x 2 x 3 = 12
Hence the common denominator is 12