Add 18/40 and 1/20
18/40 + 1/20 is 1/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 20 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
18/40 = 18 × 1/40 × 1 = 18/40 - Likewise, for the 2nd fraction, since 20 × 2 = 40,
1/20 = 1 × 2/20 × 2 = 2/40 - Add the two like fractions:
18/40 + 2/40 = 18 + 2/40 = 20/40 - 20/40 simplified gives 1/2
- So, 18/40 + 1/20 = 1/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/40+1/20 18/40+2/20 18/80+1/20 18/40+1/40 54/40+1/20 18/40+3/20 18/40+1/60 90/40+1/20 18/40+5/20 18/40+7/20