Subtract 18/84 from 5/10
5/10 - 18/84 is 2/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 10 × 42 = 420,
5/10 = 5 × 42/10 × 42 = 210/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
18/84 = 18 × 5/84 × 5 = 90/420 - Subtract the two like fractions:
210/420 - 90/420 = 210 - 90/420 = 120/420 - After reducing the fraction, the answer is 2/7
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