Add 1/40 and 40/12
1st number: 1/40, 2nd number: 3 4/12
1/40 + 40/12 is 403/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 12 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
1/40 = 1 × 3/40 × 3 = 3/120 - Likewise, for the 2nd fraction, since 12 × 10 = 120,
40/12 = 40 × 10/12 × 10 = 400/120 - Add the two like fractions:
3/120 + 400/120 = 3 + 400/120 = 403/120 - So, 1/40 + 40/12 = 403/120
In mixed form: 343/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/40+40/12 1/40+80/12 1/80+40/12 1/40+40/24 3/40+40/12 1/40+40/36 5/40+40/12 1/40+40/60 7/40+40/12 1/40+40/84