Subtract 45/15 from 12/28
1st number: 12/28, 2nd number: 3 0/15
12/28 - 45/15 is -18/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 15 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
12/28 = 12 × 15/28 × 15 = 180/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
45/15 = 45 × 28/15 × 28 = 1260/420 - Subtract the two like fractions:
180/420 - 1260/420 = 180 - 1260/420 = -1080/420 - After reducing the fraction, the answer is -18/7
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