Add 3/40 and 30/18
1st number: 3/40, 2nd number: 1 12/18
3/40 + 30/18 is 209/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 18 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
3/40 = 3 × 9/40 × 9 = 27/360 - Likewise, for the 2nd fraction, since 18 × 20 = 360,
30/18 = 30 × 20/18 × 20 = 600/360 - Add the two like fractions:
27/360 + 600/360 = 27 + 600/360 = 627/360 - 627/360 simplified gives 209/120
- So, 3/40 + 30/18 = 209/120
In mixed form: 189/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/40+30/18 3/40+60/18 3/80+30/18 3/40+30/36 9/40+30/18 3/40+90/18 3/40+30/54 15/40+30/18 3/40+30/90 21/40+30/18