Add 12/18 and 5/40
12/18 + 5/40 is 19/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 18 × 20 = 360,
12/18 = 12 × 20/18 × 20 = 240/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
5/40 = 5 × 9/40 × 9 = 45/360 - Add the two like fractions:
240/360 + 45/360 = 240 + 45/360 = 285/360 - 285/360 simplified gives 19/24
- So, 12/18 + 5/40 = 19/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/18+5/40 12/18+10/40 12/36+5/40 12/18+5/80 36/18+5/40 12/18+15/40 12/54+5/40 60/18+5/40 12/18+25/40 12/90+5/40 84/18+5/40 12/18+35/40