Add 4/40 and 20/12
1st number: 4/40, 2nd number: 1 8/12
4/40 + 20/12 is 53/30.
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,
4/40 = 4 × 3/40 × 3 = 12/120 - Likewise, for the 2nd fraction, since 12 × 10 = 120,
20/12 = 20 × 10/12 × 10 = 200/120 - Add the two like fractions:
12/120 + 200/120 = 12 + 200/120 = 212/120 - 212/120 simplified gives 53/30
- So, 4/40 + 20/12 = 53/30
In mixed form: 123/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/40+20/12 4/40+40/12 4/80+20/12 4/40+20/24 12/40+20/12 4/40+60/12 4/40+20/36 20/40+20/12 4/40+20/60 28/40+20/12 4/40+20/84