Add 15/40 and 20/36
15/40 + 20/36 is 67/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 36 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
15/40 = 15 × 9/40 × 9 = 135/360 - Likewise, for the 2nd fraction, since 36 × 10 = 360,
20/36 = 20 × 10/36 × 10 = 200/360 - Add the two like fractions:
135/360 + 200/360 = 135 + 200/360 = 335/360 - 335/360 simplified gives 67/72
- So, 15/40 + 20/36 = 67/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/40+20/36 15/40+40/36 15/80+20/36 15/40+20/72 45/40+20/36 15/40+60/36 75/40+20/36