Subtract 21/49 from 63/42, Solve 1 21/42

Subtract 21/49 from 63/42

1^st number: 1 21/42, 2^nd number: 21/49

63/42 - 21/49 is 15/14.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 49 is 294

Next, find the equivalent fraction of both fractional numbers with denominator 294
For the 1st fraction, since 42 × 7 = 294,
63/42 = 63 × 7/42 × 7 = 441/294
Likewise, for the 2nd fraction, since 49 × 6 = 294,
21/49 = 21 × 6/49 × 6 = 126/294
Subtract the two like fractions:
441/294 - 126/294 = 441 - 126/294 = 315/294
After reducing the fraction, the answer is 15/14
In mixed form: 11/14

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