Add 1/18 and 15/40
1/18 + 15/40 is 31/72.
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,
1/18 = 1 × 20/18 × 20 = 20/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
15/40 = 15 × 9/40 × 9 = 135/360 - Add the two like fractions:
20/360 + 135/360 = 20 + 135/360 = 155/360 - 155/360 simplified gives 31/72
- So, 1/18 + 15/40 = 31/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/18+15/40 1/18+30/40 1/36+15/40 1/18+15/80 3/18+15/40 1/18+45/40 1/54+15/40 5/18+15/40 1/18+75/40 1/90+15/40 7/18+15/40