Subtract 15/45 from 7/28
7/28 - 15/45 is -1/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
7/28 = 7 × 45/28 × 45 = 315/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
15/45 = 15 × 28/45 × 28 = 420/1260 - Subtract the two like fractions:
315/1260 - 420/1260 = 315 - 420/1260 = -105/1260 - After reducing the fraction, the answer is -1/12
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