Subtract 49/48 from 10/21, Solve 10/21

Subtract 49/48 from 10/21

1^st number: 10/21, 2^nd number: 1 1/48

10/21 - 49/48 is -61/112.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 48 is 336

Next, find the equivalent fraction of both fractional numbers with denominator 336
For the 1st fraction, since 21 × 16 = 336,
10/21 = 10 × 16/21 × 16 = 160/336
Likewise, for the 2nd fraction, since 48 × 7 = 336,
49/48 = 49 × 7/48 × 7 = 343/336
Subtract the two like fractions:
160/336 - 343/336 = 160 - 343/336 = -183/336
After reducing the fraction, the answer is -61/112

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