Add 54/15 and 70/9
1st number: 3 9/15, 2nd number: 7 7/9
54/15 + 70/9 is 512/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 9 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 15 × 3 = 45,
54/15 = 54 × 3/15 × 3 = 162/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
70/9 = 70 × 5/9 × 5 = 350/45 - Add the two like fractions:
162/45 + 350/45 = 162 + 350/45 = 512/45 - So, 54/15 + 70/9 = 512/45
In mixed form: 1117/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/30+70/9 54/15+70/18 54/45+70/9 54/15+70/27 54/75+70/9 54/15+70/45 54/15+70/63