Subtract 20/3 from 12/28
1st number: 12/28, 2nd number: 6 2/3
12/28 - 20/3 is -131/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 3 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
12/28 = 12 × 3/28 × 3 = 36/84 - Likewise, for the 2nd fraction, since 3 × 28 = 84,
20/3 = 20 × 28/3 × 28 = 560/84 - Subtract the two like fractions:
36/84 - 560/84 = 36 - 560/84 = -524/84 - After reducing the fraction, the answer is -131/21
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