Subtract 25/40 from 90/5
1st number: 18 0/5, 2nd number: 25/40
90/5 - 25/40 is 139/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 5 × 8 = 40,
90/5 = 90 × 8/5 × 8 = 720/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
25/40 = 25 × 1/40 × 1 = 25/40 - Subtract the two like fractions:
720/40 - 25/40 = 720 - 25/40 = 695/40 - After reducing the fraction, the answer is 139/8
- In mixed form: 173/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/5-50/40 90/10-25/40 90/5-25/80 90/5-75/40 90/15-25/40 90/25-25/40 90/35-25/40