Subtract 25/18 from 90/42
1st number: 2 6/42, 2nd number: 1 7/18
90/42 - 25/18 is 95/126.
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,
90/42 = 90 × 3/42 × 3 = 270/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
25/18 = 25 × 7/18 × 7 = 175/126 - Subtract the two like fractions:
270/126 - 175/126 = 270 - 175/126 = 95/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/42-50/18 90/84-25/18 90/42-25/36 90/42-75/18 90/42-25/54 90/42-25/90