Subtract 4/8 from 49/21, Solve 2 7/21

Subtract 4/8 from 49/21

1^st number: 2 7/21, 2^nd number: 4/8

49/21 - 4/8 is 11/6.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 8 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 21 × 8 = 168,
49/21 = 49 × 8/21 × 8 = 392/168
Likewise, for the 2nd fraction, since 8 × 21 = 168,
4/8 = 4 × 21/8 × 21 = 84/168
Subtract the two like fractions:
392/168 - 84/168 = 392 - 84/168 = 308/168
After reducing the fraction, the answer is 11/6
In mixed form: 15/6

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