Add 20/40 and 18/6
1st number: 20/40, 2nd number: 3 0/6
20/40 + 18/6 is 7/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 6 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
20/40 = 20 × 3/40 × 3 = 60/120 - Likewise, for the 2nd fraction, since 6 × 20 = 120,
18/6 = 18 × 20/6 × 20 = 360/120 - Add the two like fractions:
60/120 + 360/120 = 60 + 360/120 = 420/120 - 420/120 simplified gives 7/2
- So, 20/40 + 18/6 = 7/2
In mixed form: 31/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/40+36/6 20/80+18/6 20/40+18/12 60/40+18/6 20/40+54/6 20/40+90/6 20/40+18/30 20/40+18/42