Subtract 36/84 from 2/20
2/20 - 36/84 is -23/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
2/20 = 2 × 21/20 × 21 = 42/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
36/84 = 36 × 5/84 × 5 = 180/420 - Subtract the two like fractions:
42/420 - 180/420 = 42 - 180/420 = -138/420 - After reducing the fraction, the answer is -23/70
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