Subtract 81/18 from 56/7
1st number: 8 0/7, 2nd number: 4 9/18
56/7 - 81/18 is 7/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 7 × 18 = 126,
56/7 = 56 × 18/7 × 18 = 1008/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
81/18 = 81 × 7/18 × 7 = 567/126 - Subtract the two like fractions:
1008/126 - 567/126 = 1008 - 567/126 = 441/126 - After reducing the fraction, the answer is 7/2
- In mixed form: 31/2
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