Subtract 20/70 from 1/12
1/12 - 20/70 is -17/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 12 × 35 = 420,
1/12 = 1 × 35/12 × 35 = 35/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
20/70 = 20 × 6/70 × 6 = 120/420 - Subtract the two like fractions:
35/420 - 120/420 = 35 - 120/420 = -85/420 - After reducing the fraction, the answer is -17/84
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