Subtract 80/70 from 15/3
1st number: 5 0/3, 2nd number: 1 10/70
15/3 - 80/70 is 27/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 3 × 70 = 210,
15/3 = 15 × 70/3 × 70 = 1050/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
80/70 = 80 × 3/70 × 3 = 240/210 - Subtract the two like fractions:
1050/210 - 240/210 = 1050 - 240/210 = 810/210 - After reducing the fraction, the answer is 27/7
- In mixed form: 36/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/3-80/70 15/6-80/70 45/3-80/70 15/9-80/70 75/3-80/70 15/21-80/70