Add 1/40 and 45/12
1st number: 1/40, 2nd number: 3 9/12
1/40 + 45/12 is 151/40.
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,
45/12 = 45 × 10/12 × 10 = 450/120 - Add the two like fractions:
3/120 + 450/120 = 3 + 450/120 = 453/120 - 453/120 simplified gives 151/40
- So, 1/40 + 45/12 = 151/40
In mixed form: 331/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/40+45/12 1/40+90/12 1/80+45/12 1/40+45/24 3/40+45/12 1/40+45/36 5/40+45/12 1/40+45/60 7/40+45/12 1/40+45/84