Add 3/40 and 12/18
3/40 + 12/18 is 89/120.
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,
12/18 = 12 × 20/18 × 20 = 240/360 - Add the two like fractions:
27/360 + 240/360 = 27 + 240/360 = 267/360 - 267/360 simplified gives 89/120
- So, 3/40 + 12/18 = 89/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/40+12/18 3/40+24/18 3/80+12/18 3/40+12/36 9/40+12/18 3/40+36/18 3/40+12/54 15/40+12/18 3/40+60/18 3/40+12/90 21/40+12/18 3/40+84/18