Add 15/12 and 18/80
1st number: 1 3/12, 2nd number: 18/80
15/12 + 18/80 is 59/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 12 × 20 = 240,
15/12 = 15 × 20/12 × 20 = 300/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
18/80 = 18 × 3/80 × 3 = 54/240 - Add the two like fractions:
300/240 + 54/240 = 300 + 54/240 = 354/240 - 354/240 simplified gives 59/40
- So, 15/12 + 18/80 = 59/40
In mixed form: 119/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/12+18/80 15/12+36/80 15/24+18/80 45/12+18/80 15/12+54/80 15/36+18/80 75/12+18/80 15/12+90/80 15/60+18/80 15/84+18/80