Add 12/40 and 6/8
12/40 + 6/8 is 21/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
12/40 = 12 × 1/40 × 1 = 12/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
6/8 = 6 × 5/8 × 5 = 30/40 - Add the two like fractions:
12/40 + 30/40 = 12 + 30/40 = 42/40 - 42/40 simplified gives 21/20
- So, 12/40 + 6/8 = 21/20
In mixed form: 11/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/40+6/8 12/40+12/8 12/80+6/8 12/40+6/16 36/40+6/8 12/40+18/8 12/40+6/24 60/40+6/8 12/40+30/8 12/40+6/40 84/40+6/8 12/40+42/8 12/40+6/56