Subtract 21/25 from 7/12
7/12 - 21/25 is -77/300.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 25 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 12 × 25 = 300,
7/12 = 7 × 25/12 × 25 = 175/300 - Likewise, for the 2nd fraction, since 25 × 12 = 300,
21/25 = 21 × 12/25 × 12 = 252/300 - Subtract the two like fractions:
175/300 - 252/300 = 175 - 252/300 = -77/300
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