Add 21/3 and 4/28
1st number: 7 0/3, 2nd number: 4/28
21/3 + 4/28 is 50/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 3 × 28 = 84,
21/3 = 21 × 28/3 × 28 = 588/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
4/28 = 4 × 3/28 × 3 = 12/84 - Add the two like fractions:
588/84 + 12/84 = 588 + 12/84 = 600/84 - 600/84 simplified gives 50/7
- So, 21/3 + 4/28 = 50/7
In mixed form: 71/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/3+4/28 21/3+8/28 21/6+4/28 21/3+4/56 63/3+4/28 21/3+12/28 21/9+4/28 21/3+4/84 21/3+20/28 21/15+4/28