Add 12/40 and 4/18
12/40 + 4/18 is 47/90.
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,
12/40 = 12 × 9/40 × 9 = 108/360 - Likewise, for the 2nd fraction, since 18 × 20 = 360,
4/18 = 4 × 20/18 × 20 = 80/360 - Add the two like fractions:
108/360 + 80/360 = 108 + 80/360 = 188/360 - 188/360 simplified gives 47/90
- So, 12/40 + 4/18 = 47/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/40+4/18 12/40+8/18 12/80+4/18 12/40+4/36 36/40+4/18 12/40+12/18 12/40+4/54 60/40+4/18 12/40+20/18 12/40+4/90 84/40+4/18 12/40+28/18