Add 9/12 and 40/54
9/12 + 40/54 is 161/108.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 54 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 12 × 9 = 108,
9/12 = 9 × 9/12 × 9 = 81/108 - Likewise, for the 2nd fraction, since 54 × 2 = 108,
40/54 = 40 × 2/54 × 2 = 80/108 - Add the two like fractions:
81/108 + 80/108 = 81 + 80/108 = 161/108 - So, 9/12 + 40/54 = 161/108
In mixed form: 153/108
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/12+40/54 9/12+80/54 9/24+40/54 27/12+40/54 9/36+40/54 45/12+40/54 9/60+40/54 63/12+40/54 9/84+40/54