Add 21/18 and 5/63
1st number: 1 3/18, 2nd number: 5/63
21/18 + 5/63 is 157/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 63 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
21/18 = 21 × 7/18 × 7 = 147/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
5/63 = 5 × 2/63 × 2 = 10/126 - Add the two like fractions:
147/126 + 10/126 = 147 + 10/126 = 157/126 - So, 21/18 + 5/63 = 157/126
In mixed form: 131/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/18+5/63 21/18+10/63 21/36+5/63 63/18+5/63 21/18+15/63 21/54+5/63 21/18+25/63 21/90+5/63 21/18+35/63