Subtract 15/30 from 70/7
1st number: 10 0/7, 2nd number: 15/30
70/7 - 15/30 is 19/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 7 × 30 = 210,
70/7 = 70 × 30/7 × 30 = 2100/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
15/30 = 15 × 7/30 × 7 = 105/210 - Subtract the two like fractions:
2100/210 - 105/210 = 2100 - 105/210 = 1995/210 - After reducing the fraction, the answer is 19/2
- In mixed form: 91/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/14-15/30 70/7-15/60 70/7-45/30 70/21-15/30 70/7-15/90 70/7-75/30 70/35-15/30 70/49-15/30