Add 14/18 and 36/21
1st number: 14/18, 2nd number: 1 15/21
14/18 + 36/21 is 157/63.
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,
14/18 = 14 × 7/18 × 7 = 98/126 - Likewise, for the 2nd fraction, since 21 × 6 = 126,
36/21 = 36 × 6/21 × 6 = 216/126 - Add the two like fractions:
98/126 + 216/126 = 98 + 216/126 = 314/126 - 314/126 simplified gives 157/63
- So, 14/18 + 36/21 = 157/63
In mixed form: 231/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/18+36/21 14/18+72/21 14/36+36/21 14/18+36/42 42/18+36/21 14/54+36/21 14/18+36/63 70/18+36/21 14/90+36/21 98/18+36/21