Add 9/12 and 28/63
9/12 + 28/63 is 43/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 63 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 12 × 21 = 252,
9/12 = 9 × 21/12 × 21 = 189/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
28/63 = 28 × 4/63 × 4 = 112/252 - Add the two like fractions:
189/252 + 112/252 = 189 + 112/252 = 301/252 - 301/252 simplified gives 43/36
- So, 9/12 + 28/63 = 43/36
In mixed form: 17/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/12+28/63 9/12+56/63 9/24+28/63 27/12+28/63 9/12+84/63 9/36+28/63 45/12+28/63 9/60+28/63 63/12+28/63 9/84+28/63