Subtract 15/90 from 16/5
1st number: 3 1/5, 2nd number: 15/90
16/5 - 15/90 is 91/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 5 × 18 = 90,
16/5 = 16 × 18/5 × 18 = 288/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
15/90 = 15 × 1/90 × 1 = 15/90 - Subtract the two like fractions:
288/90 - 15/90 = 288 - 15/90 = 273/90 - After reducing the fraction, the answer is 91/30
- In mixed form: 31/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/5-15/90 16/5-30/90 16/10-15/90 48/5-15/90 16/5-45/90 16/15-15/90 80/5-15/90 16/5-75/90 16/25-15/90 16/35-15/90