Subtract 20/25 from 90/42
1st number: 2 6/42, 2nd number: 20/25
90/42 - 20/25 is 47/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 25 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 42 × 25 = 1050,
90/42 = 90 × 25/42 × 25 = 2250/1050 - Likewise, for the 2nd fraction, since 25 × 42 = 1050,
20/25 = 20 × 42/25 × 42 = 840/1050 - Subtract the two like fractions:
2250/1050 - 840/1050 = 2250 - 840/1050 = 1410/1050 - After reducing the fraction, the answer is 47/35
- In mixed form: 112/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/42-40/25 90/84-20/25 90/42-20/50 90/42-60/25 90/42-20/75