Subtract 7/12 from 3/28
3/28 - 7/12 is -10/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
3/28 = 3 × 3/28 × 3 = 9/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
7/12 = 7 × 7/12 × 7 = 49/84 - Subtract the two like fractions:
9/84 - 49/84 = 9 - 49/84 = -40/84 - After reducing the fraction, the answer is -10/21
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