Subtract 90/30 from 15/3
1st number: 5 0/3, 2nd number: 3 0/30
15/3 - 90/30 is 2/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 3 × 10 = 30,
15/3 = 15 × 10/3 × 10 = 150/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
90/30 = 90 × 1/30 × 1 = 90/30 - Subtract the two like fractions:
150/30 - 90/30 = 150 - 90/30 = 60/30 - After reducing the fraction, the answer is 2/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/3-90/30 15/6-90/30 15/3-90/60 45/3-90/30 15/9-90/30 75/3-90/30 15/21-90/30