Add 21/7 and 9/63
1st number: 3 0/7, 2nd number: 9/63
21/7 + 9/63 is 22/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 7 × 9 = 63,
21/7 = 21 × 9/7 × 9 = 189/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
9/63 = 9 × 1/63 × 1 = 9/63 - Add the two like fractions:
189/63 + 9/63 = 189 + 9/63 = 198/63 - 198/63 simplified gives 22/7
- So, 21/7 + 9/63 = 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: 42/7+9/63 21/7+18/63 21/14+9/63 63/7+9/63 21/7+27/63 21/7+45/63 21/35+9/63 21/49+9/63