Subtract 48/30 from 12/15
1st number: 12/15, 2nd number: 1 18/30
12/15 - 48/30 is -4/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 15 × 2 = 30,
12/15 = 12 × 2/15 × 2 = 24/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
48/30 = 48 × 1/30 × 1 = 48/30 - Subtract the two like fractions:
24/30 - 48/30 = 24 - 48/30 = -24/30 - After reducing the fraction, the answer is -4/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/15-48/30 12/15-96/30 12/30-48/30 12/15-48/60 36/15-48/30 12/45-48/30 12/15-48/90 60/15-48/30 12/75-48/30 84/15-48/30