Add 40/12 and 25/9
1st number: 3 4/12, 2nd number: 2 7/9
40/12 + 25/9 is 55/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 9 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
40/12 = 40 × 3/12 × 3 = 120/36 - Likewise, for the 2nd fraction, since 9 × 4 = 36,
25/9 = 25 × 4/9 × 4 = 100/36 - Add the two like fractions:
120/36 + 100/36 = 120 + 100/36 = 220/36 - 220/36 simplified gives 55/9
- So, 40/12 + 25/9 = 55/9
In mixed form: 61/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/12+25/9 40/12+50/9 40/24+25/9 40/12+25/18 40/12+75/9 40/36+25/9 40/12+25/27 40/60+25/9 40/12+25/45 40/84+25/9 40/12+25/63