Add 12/80 and 56/45
1st number: 12/80, 2nd number: 1 11/45
12/80 + 56/45 is 251/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 45 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 45 × 16 = 720,
56/45 = 56 × 16/45 × 16 = 896/720 - Add the two like fractions:
108/720 + 896/720 = 108 + 896/720 = 1004/720 - 1004/720 simplified gives 251/180
- So, 12/80 + 56/45 = 251/180
In mixed form: 171/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/80+56/45 12/80+56/90 36/80+56/45 60/80+56/45 84/80+56/45