Add 28/4 and 21/63
1st number: 7 0/4, 2nd number: 21/63
28/4 + 21/63 is 22/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 63 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 4 × 63 = 252,
28/4 = 28 × 63/4 × 63 = 1764/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
21/63 = 21 × 4/63 × 4 = 84/252 - Add the two like fractions:
1764/252 + 84/252 = 1764 + 84/252 = 1848/252 - 1848/252 simplified gives 22/3
- So, 28/4 + 21/63 = 22/3
In mixed form: 71/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/4+21/63 28/4+42/63 28/8+21/63 84/4+21/63 28/12+21/63 28/20+21/63