Subtract 12/5 from 15/30
1st number: 15/30, 2nd number: 2 2/5
15/30 - 12/5 is -19/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 5 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 30 × 1 = 30,
15/30 = 15 × 1/30 × 1 = 15/30 - Likewise, for the 2nd fraction, since 5 × 6 = 30,
12/5 = 12 × 6/5 × 6 = 72/30 - Subtract the two like fractions:
15/30 - 72/30 = 15 - 72/30 = -57/30 - After reducing the fraction, the answer is -19/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 15/30-24/5 15/60-12/5 15/30-12/10 45/30-12/5 15/30-36/5 15/90-12/5 15/30-12/15 75/30-12/5 15/30-60/5 15/30-12/25 15/30-84/5 15/30-12/35