Add 9/3 and 21/7
1st number: 3 0/3, 2nd number: 3 0/7
9/3 + 21/7 is 6/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 7 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
9/3 = 9 × 7/3 × 7 = 63/21 - Likewise, for the 2nd fraction, since 7 × 3 = 21,
21/7 = 21 × 3/7 × 3 = 63/21 - Add the two like fractions:
63/21 + 63/21 = 63 + 63/21 = 126/21 - 126/21 simplified gives 6/1
- So, 9/3 + 21/7 = 6/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/3+21/7 9/3+42/7 9/6+21/7 9/3+21/14 27/3+21/7 9/3+63/7 45/3+21/7 9/15+21/7 9/3+21/35 63/3+21/7 9/21+21/7 9/3+21/49