Subtract 15/9 from 3/30
1st number: 3/30, 2nd number: 1 6/9
3/30 - 15/9 is -47/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
3/30 = 3 × 3/30 × 3 = 9/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
15/9 = 15 × 10/9 × 10 = 150/90 - Subtract the two like fractions:
9/90 - 150/90 = 9 - 150/90 = -141/90 - After reducing the fraction, the answer is -47/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/30-15/9 3/30-30/9 3/60-15/9 3/30-15/18 9/30-15/9 3/30-45/9 3/90-15/9 3/30-15/27 15/30-15/9 3/30-75/9 3/30-15/45 21/30-15/9 3/30-15/63