Add 21/14 and 45/9
1st number: 1 7/14, 2nd number: 5 0/9
21/14 + 45/9 is 13/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 9 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 14 × 9 = 126,
21/14 = 21 × 9/14 × 9 = 189/126 - Likewise, for the 2nd fraction, since 9 × 14 = 126,
45/9 = 45 × 14/9 × 14 = 630/126 - Add the two like fractions:
189/126 + 630/126 = 189 + 630/126 = 819/126 - 819/126 simplified gives 13/2
- So, 21/14 + 45/9 = 13/2
In mixed form: 61/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/14+45/9 21/14+90/9 21/28+45/9 21/14+45/18 63/14+45/9 21/42+45/9 21/14+45/27 21/70+45/9 21/98+45/9 21/14+45/63