Subtract 25/63 from 45/42
1st number: 1 3/42, 2nd number: 25/63
45/42 - 25/63 is 85/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 63 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
45/42 = 45 × 3/42 × 3 = 135/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
25/63 = 25 × 2/63 × 2 = 50/126 - Subtract the two like fractions:
135/126 - 50/126 = 135 - 50/126 = 85/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/42-25/63 45/42-50/63 45/84-25/63 45/42-75/63