Subtract 21/14 from 1/72
1st number: 1/72, 2nd number: 1 7/14
1/72 - 21/14 is -107/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 14 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
1/72 = 1 × 7/72 × 7 = 7/504 - Likewise, for the 2nd fraction, since 14 × 36 = 504,
21/14 = 21 × 36/14 × 36 = 756/504 - Subtract the two like fractions:
7/504 - 756/504 = 7 - 756/504 = -749/504 - After reducing the fraction, the answer is -107/72
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