Subtract 81/8 from 90/60
1st number: 1 30/60, 2nd number: 10 1/8
90/60 - 81/8 is -69/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 60 × 2 = 120,
90/60 = 90 × 2/60 × 2 = 180/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
81/8 = 81 × 15/8 × 15 = 1215/120 - Subtract the two like fractions:
180/120 - 1215/120 = 180 - 1215/120 = -1035/120 - After reducing the fraction, the answer is -69/8
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