Add 70/18 and 15/7
1st number: 3 16/18, 2nd number: 2 1/7
70/18 + 15/7 is 380/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 7 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
70/18 = 70 × 7/18 × 7 = 490/126 - Likewise, for the 2nd fraction, since 7 × 18 = 126,
15/7 = 15 × 18/7 × 18 = 270/126 - Add the two like fractions:
490/126 + 270/126 = 490 + 270/126 = 760/126 - 760/126 simplified gives 380/63
- So, 70/18 + 15/7 = 380/63
In mixed form: 62/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/18+30/7 70/36+15/7 70/18+15/14 70/18+45/7 70/54+15/7 70/18+15/21 70/18+75/7 70/90+15/7 70/18+15/35 70/18+15/49