Add 15/63 and 28/7
1st number: 15/63, 2nd number: 4 0/7
15/63 + 28/7 is 89/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 7 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 63 × 1 = 63,
15/63 = 15 × 1/63 × 1 = 15/63 - Likewise, for the 2nd fraction, since 7 × 9 = 63,
28/7 = 28 × 9/7 × 9 = 252/63 - Add the two like fractions:
15/63 + 252/63 = 15 + 252/63 = 267/63 - 267/63 simplified gives 89/21
- So, 15/63 + 28/7 = 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: 30/63+28/7 15/63+56/7 15/63+28/14 45/63+28/7 15/63+84/7 15/63+28/21 75/63+28/7 15/63+28/35 15/63+28/49