Subtract 81/8 from 28/7
1st number: 4 0/7, 2nd number: 10 1/8
28/7 - 81/8 is -49/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 7 × 8 = 56,
28/7 = 28 × 8/7 × 8 = 224/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
81/8 = 81 × 7/8 × 7 = 567/56 - Subtract the two like fractions:
224/56 - 567/56 = 224 - 567/56 = -343/56 - After reducing the fraction, the answer is -49/8
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