Subtract 36/28 from 5/15
1st number: 5/15, 2nd number: 1 8/28
5/15 - 36/28 is -20/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 15 × 28 = 420,
5/15 = 5 × 28/15 × 28 = 140/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
36/28 = 36 × 15/28 × 15 = 540/420 - Subtract the two like fractions:
140/420 - 540/420 = 140 - 540/420 = -400/420 - After reducing the fraction, the answer is -20/21
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