Subtract 81/10 from 90/35
1st number: 2 20/35, 2nd number: 8 1/10
90/35 - 81/10 is -387/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 10 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 35 × 2 = 70,
90/35 = 90 × 2/35 × 2 = 180/70 - Likewise, for the 2nd fraction, since 10 × 7 = 70,
81/10 = 81 × 7/10 × 7 = 567/70 - Subtract the two like fractions:
180/70 - 567/70 = 180 - 567/70 = -387/70
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