Subtract 7/12 from 21/75
21/75 - 7/12 is -91/300.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 12 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 75 × 4 = 300,
21/75 = 21 × 4/75 × 4 = 84/300 - Likewise, for the 2nd fraction, since 12 × 25 = 300,
7/12 = 7 × 25/12 × 25 = 175/300 - Subtract the two like fractions:
84/300 - 175/300 = 84 - 175/300 = -91/300
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