Subtract 3/48 from 21/28, Solve 21/28

Subtract 3/48 from 21/28

21/28 - 3/48 is 11/16.

Find the least common denominator or LCM of the two denominators:
LCM of 28 and 48 is 336

Next, find the equivalent fraction of both fractional numbers with denominator 336
For the 1st fraction, since 28 × 12 = 336,
21/28 = 21 × 12/28 × 12 = 252/336
Likewise, for the 2nd fraction, since 48 × 7 = 336,
3/48 = 3 × 7/48 × 7 = 21/336
Subtract the two like fractions:
252/336 - 21/336 = 252 - 21/336 = 231/336
After reducing the fraction, the answer is 11/16

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