Subtract 25/10 from 90/5
1st number: 18 0/5, 2nd number: 2 5/10
90/5 - 25/10 is 31/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 10 is 10
Next, find the equivalent fraction of both fractional numbers with denominator 10 - For the 1st fraction, since 5 × 2 = 10,
90/5 = 90 × 2/5 × 2 = 180/10 - Likewise, for the 2nd fraction, since 10 × 1 = 10,
25/10 = 25 × 1/10 × 1 = 25/10 - Subtract the two like fractions:
180/10 - 25/10 = 180 - 25/10 = 155/10 - After reducing the fraction, the answer is 31/2
- In mixed form: 151/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/5-50/10 90/10-25/10 90/5-25/20 90/5-75/10 90/15-25/10 90/5-25/30 90/25-25/10 90/5-25/50 90/35-25/10 90/5-25/70