Subtract 3/24 from 80/42
1st number: 1 38/42, 2nd number: 3/24
80/42 - 3/24 is 299/168.
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,
80/42 = 80 × 4/42 × 4 = 320/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
3/24 = 3 × 7/24 × 7 = 21/168 - Subtract the two like fractions:
320/168 - 21/168 = 320 - 21/168 = 299/168 - In mixed form: 1131/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/42-6/24 80/84-3/24 80/42-3/48 80/42-9/24 80/42-3/72 80/42-15/24 80/42-21/24