Subtract 6/21 from 63/42, Solve 1 21/42

Subtract 6/21 from 63/42

1^st number: 1 21/42, 2^nd number: 6/21

63/42 - 6/21 is 17/14.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 21 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 42 × 1 = 42,
63/42 = 63 × 1/42 × 1 = 63/42
Likewise, for the 2nd fraction, since 21 × 2 = 42,
6/21 = 6 × 2/21 × 2 = 12/42
Subtract the two like fractions:
63/42 - 12/42 = 63 - 12/42 = 51/42
After reducing the fraction, the answer is 17/14
In mixed form: 13/14

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