Subtract 21/96 from 30/42, Solve 30/42

Subtract 21/96 from 30/42

30/42 - 21/96 is 111/224.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 96 is 672

Next, find the equivalent fraction of both fractional numbers with denominator 672
For the 1st fraction, since 42 × 16 = 672,
30/42 = 30 × 16/42 × 16 = 480/672
Likewise, for the 2nd fraction, since 96 × 7 = 672,
21/96 = 21 × 7/96 × 7 = 147/672
Subtract the two like fractions:
480/672 - 147/672 = 480 - 147/672 = 333/672
After reducing the fraction, the answer is 111/224

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