Add 24/21 and 36/18
1st number: 1 3/21, 2nd number: 2 0/18
24/21 + 36/18 is 22/7.
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,
24/21 = 24 × 6/21 × 6 = 144/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
36/18 = 36 × 7/18 × 7 = 252/126 - Add the two like fractions:
144/126 + 252/126 = 144 + 252/126 = 396/126 - 396/126 simplified gives 22/7
- So, 24/21 + 36/18 = 22/7
In mixed form: 31/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/21+36/18 24/21+72/18 24/42+36/18 72/21+36/18 24/63+36/18 24/21+36/54 24/21+36/90