Add 15/40 and 18/4
1st number: 15/40, 2nd number: 4 2/4
15/40 + 18/4 is 39/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 4 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
15/40 = 15 × 1/40 × 1 = 15/40 - Likewise, for the 2nd fraction, since 4 × 10 = 40,
18/4 = 18 × 10/4 × 10 = 180/40 - Add the two like fractions:
15/40 + 180/40 = 15 + 180/40 = 195/40 - 195/40 simplified gives 39/8
- So, 15/40 + 18/4 = 39/8
In mixed form: 47/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/40+18/4 15/40+36/4 15/80+18/4 15/40+18/8 45/40+18/4 15/40+54/4 15/40+18/12 75/40+18/4 15/40+90/4 15/40+18/20 15/40+18/28