Add 15/4 and 18/80
1st number: 3 3/4, 2nd number: 18/80
15/4 + 18/80 is 159/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 4 × 20 = 80,
15/4 = 15 × 20/4 × 20 = 300/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
18/80 = 18 × 1/80 × 1 = 18/80 - Add the two like fractions:
300/80 + 18/80 = 300 + 18/80 = 318/80 - 318/80 simplified gives 159/40
- So, 15/4 + 18/80 = 159/40
In mixed form: 339/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/4+18/80 15/4+36/80 15/8+18/80 45/4+18/80 15/4+54/80 15/12+18/80 75/4+18/80 15/4+90/80 15/20+18/80 15/28+18/80