Add 28/63 and 12/9
1st number: 28/63, 2nd number: 1 3/9
28/63 + 12/9 is 16/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 63 × 1 = 63,
28/63 = 28 × 1/63 × 1 = 28/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
12/9 = 12 × 7/9 × 7 = 84/63 - Add the two like fractions:
28/63 + 84/63 = 28 + 84/63 = 112/63 - 112/63 simplified gives 16/9
- So, 28/63 + 12/9 = 16/9
In mixed form: 17/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/63+12/9 28/63+24/9 28/63+12/18 84/63+12/9 28/63+36/9 28/63+12/27 28/63+60/9 28/63+12/45 28/63+84/9 28/63+12/63