Add 3/40 and 5/72
3/40 + 5/72 is 13/90.
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,
3/40 = 3 × 9/40 × 9 = 27/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
5/72 = 5 × 5/72 × 5 = 25/360 - Add the two like fractions:
27/360 + 25/360 = 27 + 25/360 = 52/360 - 52/360 simplified gives 13/90
- So, 3/40 + 5/72 = 13/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/40+5/72 3/40+10/72 3/80+5/72 9/40+5/72 3/40+15/72 15/40+5/72 3/40+25/72 21/40+5/72 3/40+35/72