Subtract 18/10 from 20/84
1st number: 20/84, 2nd number: 1 8/10
20/84 - 18/10 is -164/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 10 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
20/84 = 20 × 5/84 × 5 = 100/420 - Likewise, for the 2nd fraction, since 10 × 42 = 420,
18/10 = 18 × 42/10 × 42 = 756/420 - Subtract the two like fractions:
100/420 - 756/420 = 100 - 756/420 = -656/420 - After reducing the fraction, the answer is -164/105
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