Subtract 8/15 from 70/20
1st number: 3 10/20, 2nd number: 8/15
70/20 - 8/15 is 89/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
70/20 = 70 × 3/20 × 3 = 210/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
8/15 = 8 × 4/15 × 4 = 32/60 - Subtract the two like fractions:
210/60 - 32/60 = 210 - 32/60 = 178/60 - After reducing the fraction, the answer is 89/30
- In mixed form: 229/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/20-16/15 70/40-8/15 70/20-8/30 70/20-24/15 70/60-8/15 70/20-8/45 70/20-40/15 70/20-8/75 70/20-56/15