Add 18/40 and 45/50
18/40 + 45/50 is 27/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 50 is 200
Next, find the equivalent fraction of both fractional numbers with denominator 200 - For the 1st fraction, since 40 × 5 = 200,
18/40 = 18 × 5/40 × 5 = 90/200 - Likewise, for the 2nd fraction, since 50 × 4 = 200,
45/50 = 45 × 4/50 × 4 = 180/200 - Add the two like fractions:
90/200 + 180/200 = 90 + 180/200 = 270/200 - 270/200 simplified gives 27/20
- So, 18/40 + 45/50 = 27/20
In mixed form: 17/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/40+45/50 18/40+90/50 18/80+45/50 54/40+45/50 90/40+45/50