Add 20/40 and 8/12
20/40 + 8/12 is 7/6.
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,
20/40 = 20 × 3/40 × 3 = 60/120 - Likewise, for the 2nd fraction, since 12 × 10 = 120,
8/12 = 8 × 10/12 × 10 = 80/120 - Add the two like fractions:
60/120 + 80/120 = 60 + 80/120 = 140/120 - 140/120 simplified gives 7/6
- So, 20/40 + 8/12 = 7/6
In mixed form: 11/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/40+16/12 20/80+8/12 20/40+8/24 60/40+8/12 20/40+24/12 20/40+8/36 20/40+40/12 20/40+8/60 20/40+56/12 20/40+8/84