Subtract 90/35 from 80/84
1st number: 80/84, 2nd number: 2 20/35
80/84 - 90/35 is -34/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 35 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
80/84 = 80 × 5/84 × 5 = 400/420 - Likewise, for the 2nd fraction, since 35 × 12 = 420,
90/35 = 90 × 12/35 × 12 = 1080/420 - Subtract the two like fractions:
400/420 - 1080/420 = 400 - 1080/420 = -680/420 - After reducing the fraction, the answer is -34/21
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