Subtract 6/84 from 49/21, Solve 2 7/21

Subtract 6/84 from 49/21

1^st number: 2 7/21, 2^nd number: 6/84

49/21 - 6/84 is 95/42.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 84 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 84 × 1 = 84,
6/84 = 6 × 1/84 × 1 = 6/84
Subtract the two like fractions:
196/84 - 6/84 = 196 - 6/84 = 190/84
After reducing the fraction, the answer is 95/42
In mixed form: 211/42

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