Subtract 6/7 from 12/20
12/20 - 6/7 is -9/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 7 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
12/20 = 12 × 7/20 × 7 = 84/140 - Likewise, for the 2nd fraction, since 7 × 20 = 140,
6/7 = 6 × 20/7 × 20 = 120/140 - Subtract the two like fractions:
84/140 - 120/140 = 84 - 120/140 = -36/140 - After reducing the fraction, the answer is -9/35
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