Add 21/6 and 4/7
1st number: 3 3/6, 2nd number: 4/7
21/6 + 4/7 is 57/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 7 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
21/6 = 21 × 7/6 × 7 = 147/42 - Likewise, for the 2nd fraction, since 7 × 6 = 42,
4/7 = 4 × 6/7 × 6 = 24/42 - Add the two like fractions:
147/42 + 24/42 = 147 + 24/42 = 171/42 - 171/42 simplified gives 57/14
- So, 21/6 + 4/7 = 57/14
In mixed form: 41/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/6+4/7 21/6+8/7 21/12+4/7 21/6+4/14 63/6+4/7 21/6+12/7 21/18+4/7 21/6+4/21 21/6+20/7 21/30+4/7 21/6+4/35 21/6+28/7 21/42+4/7 21/6+4/49