Add 12/80 and 45/20
1st number: 12/80, 2nd number: 2 5/20
12/80 + 45/20 is 12/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 20 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
12/80 = 12 × 1/80 × 1 = 12/80 - Likewise, for the 2nd fraction, since 20 × 4 = 80,
45/20 = 45 × 4/20 × 4 = 180/80 - Add the two like fractions:
12/80 + 180/80 = 12 + 180/80 = 192/80 - 192/80 simplified gives 12/5
- So, 12/80 + 45/20 = 12/5
In mixed form: 22/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/80+45/20 12/80+90/20 12/80+45/40 36/80+45/20 12/80+45/60 60/80+45/20 84/80+45/20