Subtract 6/5 from 63/21, Solve 3 0/21

Subtract 6/5 from 63/21

1^st number: 3 0/21, 2^nd number: 1 1/5

63/21 - 6/5 is 9/5.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 5 is 105

Next, find the equivalent fraction of both fractional numbers with denominator 105
For the 1st fraction, since 21 × 5 = 105,
63/21 = 63 × 5/21 × 5 = 315/105
Likewise, for the 2nd fraction, since 5 × 21 = 105,
6/5 = 6 × 21/5 × 21 = 126/105
Subtract the two like fractions:
315/105 - 126/105 = 315 - 126/105 = 189/105
After reducing the fraction, the answer is 9/5
In mixed form: 14/5

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