Subtract 50/18 from 70/15
1st number: 4 10/15, 2nd number: 2 14/18
70/15 - 50/18 is 17/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
70/15 = 70 × 6/15 × 6 = 420/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
50/18 = 50 × 5/18 × 5 = 250/90 - Subtract the two like fractions:
420/90 - 250/90 = 420 - 250/90 = 170/90 - After reducing the fraction, the answer is 17/9
- In mixed form: 18/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/30-50/18 70/15-50/36 70/45-50/18 70/15-50/54 70/75-50/18 70/15-50/90