Subtract 25/48 from 4/21, Solve 4/21

Subtract 25/48 from 4/21

4/21 - 25/48 is -37/112.

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,
4/21 = 4 × 16/21 × 16 = 64/336
Likewise, for the 2nd fraction, since 48 × 7 = 336,
25/48 = 25 × 7/48 × 7 = 175/336
Subtract the two like fractions:
64/336 - 175/336 = 64 - 175/336 = -111/336
After reducing the fraction, the answer is -37/112

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