Subtract 15/70 from 75/30
1st number: 2 15/30, 2nd number: 15/70
75/30 - 15/70 is 16/7.
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,
75/30 = 75 × 7/30 × 7 = 525/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
15/70 = 15 × 3/70 × 3 = 45/210 - Subtract the two like fractions:
525/210 - 45/210 = 525 - 45/210 = 480/210 - After reducing the fraction, the answer is 16/7
- In mixed form: 22/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/30-30/70 75/60-15/70 75/30-45/70 75/90-15/70 75/30-75/70