Add 40/63 and 9/12
40/63 + 9/12 is 349/252.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 12 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 63 × 4 = 252,
40/63 = 40 × 4/63 × 4 = 160/252 - Likewise, for the 2nd fraction, since 12 × 21 = 252,
9/12 = 9 × 21/12 × 21 = 189/252 - Add the two like fractions:
160/252 + 189/252 = 160 + 189/252 = 349/252 - So, 40/63 + 9/12 = 349/252
In mixed form: 197/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/63+9/12 40/63+18/12 40/63+9/24 40/63+27/12 40/63+9/36 40/63+45/12 40/63+9/60 40/63+63/12 40/63+9/84