Add 12/80 and 40/18
1st number: 12/80, 2nd number: 2 4/18
12/80 + 40/18 is 427/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 18 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
12/80 = 12 × 9/80 × 9 = 108/720 - Likewise, for the 2nd fraction, since 18 × 40 = 720,
40/18 = 40 × 40/18 × 40 = 1600/720 - Add the two like fractions:
108/720 + 1600/720 = 108 + 1600/720 = 1708/720 - 1708/720 simplified gives 427/180
- So, 12/80 + 40/18 = 427/180
In mixed form: 267/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/80+40/18 12/80+80/18 12/80+40/36 36/80+40/18 12/80+40/54 60/80+40/18 12/80+40/90 84/80+40/18