Add 60/18 and 42/21
1st number: 3 6/18, 2nd number: 2 0/21
60/18 + 42/21 is 16/3.
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,
60/18 = 60 × 7/18 × 7 = 420/126 - Likewise, for the 2nd fraction, since 21 × 6 = 126,
42/21 = 42 × 6/21 × 6 = 252/126 - Add the two like fractions:
420/126 + 252/126 = 420 + 252/126 = 672/126 - 672/126 simplified gives 16/3
- So, 60/18 + 42/21 = 16/3
In mixed form: 51/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/18+84/21 60/36+42/21 60/54+42/21 60/18+42/63 60/90+42/21