Subtract 9/49 from 63/21, Solve 3 0/21

Subtract 9/49 from 63/21

1^st number: 3 0/21, 2^nd number: 9/49

63/21 - 9/49 is 138/49.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 49 is 147

Next, find the equivalent fraction of both fractional numbers with denominator 147
For the 1st fraction, since 21 × 7 = 147,
63/21 = 63 × 7/21 × 7 = 441/147
Likewise, for the 2nd fraction, since 49 × 3 = 147,
9/49 = 9 × 3/49 × 3 = 27/147
Subtract the two like fractions:
441/147 - 27/147 = 441 - 27/147 = 414/147
After reducing the fraction, the answer is 138/49
In mixed form: 240/49

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