Subtract 25/21 from 49/12, Solve 4 1/12

Subtract 25/21 from 49/12

1^st number: 4 1/12, 2^nd number: 1 4/21

49/12 - 25/21 is 81/28.

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

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 12 × 7 = 84,
49/12 = 49 × 7/12 × 7 = 343/84
Likewise, for the 2nd fraction, since 21 × 4 = 84,
25/21 = 25 × 4/21 × 4 = 100/84
Subtract the two like fractions:
343/84 - 100/84 = 343 - 100/84 = 243/84
After reducing the fraction, the answer is 81/28
In mixed form: 225/28

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