Add 5/40 and 18/9
1st number: 5/40, 2nd number: 2 0/9
5/40 + 18/9 is 17/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 9 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
5/40 = 5 × 9/40 × 9 = 45/360 - Likewise, for the 2nd fraction, since 9 × 40 = 360,
18/9 = 18 × 40/9 × 40 = 720/360 - Add the two like fractions:
45/360 + 720/360 = 45 + 720/360 = 765/360 - 765/360 simplified gives 17/8
- So, 5/40 + 18/9 = 17/8
In mixed form: 21/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/40+18/9 5/40+36/9 5/80+18/9 15/40+18/9 5/40+54/9 5/40+18/27 25/40+18/9 5/40+90/9 5/40+18/45 35/40+18/9 5/40+18/63