Subtract 10/42 from 45/18
1st number: 2 9/18, 2nd number: 10/42
45/18 - 10/42 is 95/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 42 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
45/18 = 45 × 7/18 × 7 = 315/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
10/42 = 10 × 3/42 × 3 = 30/126 - Subtract the two like fractions:
315/126 - 30/126 = 315 - 30/126 = 285/126 - After reducing the fraction, the answer is 95/42
- In mixed form: 211/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/18-10/42 45/18-20/42 45/36-10/42 45/18-10/84 45/18-30/42 45/54-10/42 45/18-50/42 45/90-10/42 45/18-70/42