Question

3. Find the least common denominator for the group of denominators using the method of prime numbers. 45, 75, 63​

Answer 1

We have to find LCM

3 | 45,75,63

3 | 15,25,21

5 | 5,25,7

5 | 1,5,7

7 | 1,1,7

LCM=3×3×5×5×7=1575