Add 3/40 and 1/72
3/40 + 1/72 is 4/45.
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,
1/72 = 1 × 5/72 × 5 = 5/360 - Add the two like fractions:
27/360 + 5/360 = 27 + 5/360 = 32/360 - 32/360 simplified gives 4/45
- So, 3/40 + 1/72 = 4/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/40+1/72 3/40+2/72 3/80+1/72 9/40+1/72 3/40+3/72 15/40+1/72 3/40+5/72 21/40+1/72 3/40+7/72