Subtract 4/7 from 3/12
3/12 - 4/7 is -9/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 7 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
3/12 = 3 × 7/12 × 7 = 21/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
4/7 = 4 × 12/7 × 12 = 48/84 - Subtract the two like fractions:
21/84 - 48/84 = 21 - 48/84 = -27/84 - After reducing the fraction, the answer is -9/28
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