Add 30/12 and 3/40
1st number: 2 6/12, 2nd number: 3/40
30/12 + 3/40 is 103/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 12 × 10 = 120,
30/12 = 30 × 10/12 × 10 = 300/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
3/40 = 3 × 3/40 × 3 = 9/120 - Add the two like fractions:
300/120 + 9/120 = 300 + 9/120 = 309/120 - 309/120 simplified gives 103/40
- So, 30/12 + 3/40 = 103/40
In mixed form: 223/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/12+3/40 30/12+6/40 30/24+3/40 30/12+3/80 90/12+3/40 30/12+9/40 30/36+3/40 30/12+15/40 30/60+3/40 30/12+21/40 30/84+3/40