Add 15/40 and 5/72
15/40 + 5/72 is 4/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 72 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 72 × 5 = 360,
5/72 = 5 × 5/72 × 5 = 25/360 - Add the two like fractions:
135/360 + 25/360 = 135 + 25/360 = 160/360 - 160/360 simplified gives 4/9
- So, 15/40 + 5/72 = 4/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/40+5/72 15/40+10/72 15/80+5/72 45/40+5/72 15/40+15/72 75/40+5/72 15/40+25/72 15/40+35/72