Add 12/80 and 15/45
12/80 + 15/45 is 29/60.
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,
15/45 = 15 × 16/45 × 16 = 240/720 - Add the two like fractions:
108/720 + 240/720 = 108 + 240/720 = 348/720 - 348/720 simplified gives 29/60
- So, 12/80 + 15/45 = 29/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/80+15/45 12/80+30/45 12/80+15/90 36/80+15/45 60/80+15/45 12/80+75/45 84/80+15/45