Subtract 15/42 from 80/63
1st number: 1 17/63, 2nd number: 15/42
80/63 - 15/42 is 115/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 42 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 63 × 2 = 126,
80/63 = 80 × 2/63 × 2 = 160/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
15/42 = 15 × 3/42 × 3 = 45/126 - Subtract the two like fractions:
160/126 - 45/126 = 160 - 45/126 = 115/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/63-30/42 80/63-15/84 80/63-45/42 80/63-75/42