Subtract 81/15 from 28/14
1st number: 2 0/14, 2nd number: 5 6/15
28/14 - 81/15 is -17/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 14 × 15 = 210,
28/14 = 28 × 15/14 × 15 = 420/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
81/15 = 81 × 14/15 × 14 = 1134/210 - Subtract the two like fractions:
420/210 - 1134/210 = 420 - 1134/210 = -714/210 - After reducing the fraction, the answer is -17/5
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