Add 3/7 and 20/18
1st number: 3/7, 2nd number: 1 2/18
3/7 + 20/18 is 97/63.
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,
3/7 = 3 × 18/7 × 18 = 54/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
20/18 = 20 × 7/18 × 7 = 140/126 - Add the two like fractions:
54/126 + 140/126 = 54 + 140/126 = 194/126 - 194/126 simplified gives 97/63
- So, 3/7 + 20/18 = 97/63
In mixed form: 134/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/7+20/18 3/7+40/18 3/14+20/18 3/7+20/36 9/7+20/18 3/7+60/18 3/21+20/18 3/7+20/54 15/7+20/18 3/35+20/18 3/7+20/90 21/7+20/18 3/49+20/18