Subtract 81/7 from 20/84
1st number: 20/84, 2nd number: 11 4/7
20/84 - 81/7 is -34/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 7 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
20/84 = 20 × 1/84 × 1 = 20/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
81/7 = 81 × 12/7 × 12 = 972/84 - Subtract the two like fractions:
20/84 - 972/84 = 20 - 972/84 = -952/84 - After reducing the fraction, the answer is -34/3
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