Subtract 18/72 from 81/14
1st number: 5 11/14, 2nd number: 18/72
81/14 - 18/72 is 155/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 14 × 36 = 504,
81/14 = 81 × 36/14 × 36 = 2916/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
18/72 = 18 × 7/72 × 7 = 126/504 - Subtract the two like fractions:
2916/504 - 126/504 = 2916 - 126/504 = 2790/504 - After reducing the fraction, the answer is 155/28
- In mixed form: 515/28
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