Add 15/80 and 20/12
1st number: 15/80, 2nd number: 1 8/12
15/80 + 20/12 is 89/48.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 12 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 80 × 3 = 240,
15/80 = 15 × 3/80 × 3 = 45/240 - Likewise, for the 2nd fraction, since 12 × 20 = 240,
20/12 = 20 × 20/12 × 20 = 400/240 - Add the two like fractions:
45/240 + 400/240 = 45 + 400/240 = 445/240 - 445/240 simplified gives 89/48
- So, 15/80 + 20/12 = 89/48
In mixed form: 141/48
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/80+20/12 15/80+40/12 15/80+20/24 45/80+20/12 15/80+60/12 15/80+20/36 75/80+20/12 15/80+20/60 15/80+20/84