Subtract 10/18 from 45/42
1st number: 1 3/42, 2nd number: 10/18
45/42 - 10/18 is 65/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 18 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 18 × 7 = 126,
10/18 = 10 × 7/18 × 7 = 70/126 - Subtract the two like fractions:
135/126 - 70/126 = 135 - 70/126 = 65/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/42-10/18 45/42-20/18 45/84-10/18 45/42-10/36 45/42-30/18 45/42-10/54 45/42-50/18 45/42-10/90 45/42-70/18