Subtract 42/60 from 20/84
20/84 - 42/60 is -97/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 60 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 60 × 7 = 420,
42/60 = 42 × 7/60 × 7 = 294/420 - Subtract the two like fractions:
100/420 - 294/420 = 100 - 294/420 = -194/420 - After reducing the fraction, the answer is -97/210
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