Add 9/7 and 20/18
1st number: 1 2/7, 2nd number: 1 2/18
9/7 + 20/18 is 151/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 7 × 18 = 126,
9/7 = 9 × 18/7 × 18 = 162/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
20/18 = 20 × 7/18 × 7 = 140/126 - Add the two like fractions:
162/126 + 140/126 = 162 + 140/126 = 302/126 - 302/126 simplified gives 151/63
- So, 9/7 + 20/18 = 151/63
In mixed form: 225/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/7+20/18 9/7+40/18 9/14+20/18 9/7+20/36 27/7+20/18 9/7+60/18 9/21+20/18 9/7+20/54 45/7+20/18 9/35+20/18 9/7+20/90 63/7+20/18 9/49+20/18