Subtract 45/42 from 50/18
1st number: 2 14/18, 2nd number: 1 3/42
50/18 - 45/42 is 215/126.
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,
50/18 = 50 × 7/18 × 7 = 350/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
45/42 = 45 × 3/42 × 3 = 135/126 - Subtract the two like fractions:
350/126 - 135/126 = 350 - 135/126 = 215/126 - In mixed form: 189/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/18-90/42 50/36-45/42 50/18-45/84 50/54-45/42 50/90-45/42