Add 35/21 and 54/18
1st number: 1 14/21, 2nd number: 3 0/18
35/21 + 54/18 is 14/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 21 × 6 = 126,
35/21 = 35 × 6/21 × 6 = 210/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
54/18 = 54 × 7/18 × 7 = 378/126 - Add the two like fractions:
210/126 + 378/126 = 210 + 378/126 = 588/126 - 588/126 simplified gives 14/3
- So, 35/21 + 54/18 = 14/3
In mixed form: 42/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/21+54/18 35/42+54/18 35/21+54/36 35/63+54/18 35/21+54/90