Subtract 48/70 from 15/30
15/30 - 48/70 is -13/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
15/30 = 15 × 7/30 × 7 = 105/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
48/70 = 48 × 3/70 × 3 = 144/210 - Subtract the two like fractions:
105/210 - 144/210 = 105 - 144/210 = -39/210 - After reducing the fraction, the answer is -13/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 15/30-96/70 15/60-48/70 45/30-48/70 15/90-48/70 75/30-48/70