Subtract 20/84 from 2/5
2/5 - 20/84 is 17/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 5 × 84 = 420,
2/5 = 2 × 84/5 × 84 = 168/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
20/84 = 20 × 5/84 × 5 = 100/420 - Subtract the two like fractions:
168/420 - 100/420 = 168 - 100/420 = 68/420 - After reducing the fraction, the answer is 17/105
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