Add 70/15 and 9/18
1st number: 4 10/15, 2nd number: 9/18
70/15 + 9/18 is 31/6.
Steps for adding 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,
9/18 = 9 × 5/18 × 5 = 45/90 - Add the two like fractions:
420/90 + 45/90 = 420 + 45/90 = 465/90 - 465/90 simplified gives 31/6
- So, 70/15 + 9/18 = 31/6
In mixed form: 51/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/30+9/18 70/15+9/36 70/15+27/18 70/45+9/18 70/15+9/54 70/15+45/18 70/75+9/18 70/15+9/90 70/15+63/18