Add 21/7 and 8/63
1st number: 3 0/7, 2nd number: 8/63
21/7 + 8/63 is 197/63.
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,
8/63 = 8 × 1/63 × 1 = 8/63 - Add the two like fractions:
189/63 + 8/63 = 189 + 8/63 = 197/63 - So, 21/7 + 8/63 = 197/63
In mixed form: 38/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/7+8/63 21/7+16/63 21/14+8/63 63/7+8/63 21/7+24/63 21/7+40/63 21/35+8/63 21/7+56/63 21/49+8/63