Add 15/9 and 70/8
1st number: 1 6/9, 2nd number: 8 6/8
15/9 + 70/8 is 125/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 9 × 8 = 72,
15/9 = 15 × 8/9 × 8 = 120/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
70/8 = 70 × 9/8 × 9 = 630/72 - Add the two like fractions:
120/72 + 630/72 = 120 + 630/72 = 750/72 - 750/72 simplified gives 125/12
- So, 15/9 + 70/8 = 125/12
In mixed form: 105/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/9+70/8 15/18+70/8 15/9+70/16 45/9+70/8 15/27+70/8 15/9+70/24 75/9+70/8 15/45+70/8 15/9+70/40 15/63+70/8 15/9+70/56