Add 15/18 and 35/40
15/18 + 35/40 is 41/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 18 × 20 = 360,
15/18 = 15 × 20/18 × 20 = 300/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
35/40 = 35 × 9/40 × 9 = 315/360 - Add the two like fractions:
300/360 + 315/360 = 300 + 315/360 = 615/360 - 615/360 simplified gives 41/24
- So, 15/18 + 35/40 = 41/24
In mixed form: 117/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/18+35/40 15/18+70/40 15/36+35/40 15/18+35/80 45/18+35/40 15/54+35/40 75/18+35/40 15/90+35/40