Add 54/15 and 70/18
1st number: 3 9/15, 2nd number: 3 16/18
54/15 + 70/18 is 337/45.
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,
54/15 = 54 × 6/15 × 6 = 324/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
70/18 = 70 × 5/18 × 5 = 350/90 - Add the two like fractions:
324/90 + 350/90 = 324 + 350/90 = 674/90 - 674/90 simplified gives 337/45
- So, 54/15 + 70/18 = 337/45
In mixed form: 722/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/30+70/18 54/15+70/36 54/45+70/18 54/15+70/54 54/75+70/18 54/15+70/90