Subtract 81/15 from 40/14
1st number: 2 12/14, 2nd number: 5 6/15
40/14 - 81/15 is -89/35.
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,
40/14 = 40 × 15/14 × 15 = 600/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
81/15 = 81 × 14/15 × 14 = 1134/210 - Subtract the two like fractions:
600/210 - 1134/210 = 600 - 1134/210 = -534/210 - After reducing the fraction, the answer is -89/35
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