Add 9/18 and 60/21
1st number: 9/18, 2nd number: 2 18/21
9/18 + 60/21 is 47/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 21 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
9/18 = 9 × 7/18 × 7 = 63/126 - Likewise, for the 2nd fraction, since 21 × 6 = 126,
60/21 = 60 × 6/21 × 6 = 360/126 - Add the two like fractions:
63/126 + 360/126 = 63 + 360/126 = 423/126 - 423/126 simplified gives 47/14
- So, 9/18 + 60/21 = 47/14
In mixed form: 35/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 9/36+60/21 9/18+60/42 27/18+60/21 9/54+60/21 9/18+60/63 45/18+60/21 9/90+60/21 63/18+60/21