Add 28/7 and 15/63
1st number: 4 0/7, 2nd number: 15/63
28/7 + 15/63 is 89/21.
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,
28/7 = 28 × 9/7 × 9 = 252/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
15/63 = 15 × 1/63 × 1 = 15/63 - Add the two like fractions:
252/63 + 15/63 = 252 + 15/63 = 267/63 - 267/63 simplified gives 89/21
- So, 28/7 + 15/63 = 89/21
In mixed form: 45/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/7+15/63 28/7+30/63 28/14+15/63 84/7+15/63 28/7+45/63 28/21+15/63 28/7+75/63 28/35+15/63 28/49+15/63