Subtract 1/12 from 49/21, Solve 2 7/21

Subtract 1/12 from 49/21

1^st number: 2 7/21, 2^nd number: 1/12

49/21 - 1/12 is 9/4.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 12 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 21 × 4 = 84,
49/21 = 49 × 4/21 × 4 = 196/84
Likewise, for the 2nd fraction, since 12 × 7 = 84,
1/12 = 1 × 7/12 × 7 = 7/84
Subtract the two like fractions:
196/84 - 7/84 = 196 - 7/84 = 189/84
After reducing the fraction, the answer is 9/4
In mixed form: 21/4

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