Subtract 28/12 from 28/40
1st number: 28/40, 2nd number: 2 4/12
28/40 - 28/12 is -49/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 12 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
28/40 = 28 × 3/40 × 3 = 84/120 - Likewise, for the 2nd fraction, since 12 × 10 = 120,
28/12 = 28 × 10/12 × 10 = 280/120 - Subtract the two like fractions:
84/120 - 280/120 = 84 - 280/120 = -196/120 - After reducing the fraction, the answer is -49/30
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