Subtract 80/12 from 27/42
1st number: 27/42, 2nd number: 6 8/12
27/42 - 80/12 is -253/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
27/42 = 27 × 2/42 × 2 = 54/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
80/12 = 80 × 7/12 × 7 = 560/84 - Subtract the two like fractions:
54/84 - 560/84 = 54 - 560/84 = -506/84 - After reducing the fraction, the answer is -253/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/42-80/12 27/84-80/12 27/42-80/24 81/42-80/12 27/42-80/36 27/42-80/60 27/42-80/84