Subtract 80/24 from 27/42
1st number: 27/42, 2nd number: 3 8/24
27/42 - 80/24 is -113/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 42 × 4 = 168,
27/42 = 27 × 4/42 × 4 = 108/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
80/24 = 80 × 7/24 × 7 = 560/168 - Subtract the two like fractions:
108/168 - 560/168 = 108 - 560/168 = -452/168 - After reducing the fraction, the answer is -113/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/42-80/24 27/84-80/24 27/42-80/48 81/42-80/24 27/42-80/72