Subtract 12/9 from 20/80
1st number: 20/80, 2nd number: 1 3/9
20/80 - 12/9 is -13/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 9 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
20/80 = 20 × 9/80 × 9 = 180/720 - Likewise, for the 2nd fraction, since 9 × 80 = 720,
12/9 = 12 × 80/9 × 80 = 960/720 - Subtract the two like fractions:
180/720 - 960/720 = 180 - 960/720 = -780/720 - After reducing the fraction, the answer is -13/12
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