Add 12/40 and 12/16
12/40 + 12/16 is 21/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 40 × 2 = 80,
12/40 = 12 × 2/40 × 2 = 24/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
12/16 = 12 × 5/16 × 5 = 60/80 - Add the two like fractions:
24/80 + 60/80 = 24 + 60/80 = 84/80 - 84/80 simplified gives 21/20
- So, 12/40 + 12/16 = 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+12/16 12/40+24/16 12/80+12/16 12/40+12/32 36/40+12/16 12/40+36/16 12/40+12/48 60/40+12/16 12/40+60/16 12/40+12/80 84/40+12/16 12/40+84/16