Subtract 15/90 from 60/30
1st number: 2 0/30, 2nd number: 15/90
60/30 - 15/90 is 11/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
60/30 = 60 × 3/30 × 3 = 180/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
15/90 = 15 × 1/90 × 1 = 15/90 - Subtract the two like fractions:
180/90 - 15/90 = 180 - 15/90 = 165/90 - After reducing the fraction, the answer is 11/6
- In mixed form: 15/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/30-30/90 60/30-45/90 60/90-15/90 60/30-75/90