Add 3/72 and 7/40
3/72 + 7/40 is 13/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
3/72 = 3 × 5/72 × 5 = 15/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
7/40 = 7 × 9/40 × 9 = 63/360 - Add the two like fractions:
15/360 + 63/360 = 15 + 63/360 = 78/360 - 78/360 simplified gives 13/60
- So, 3/72 + 7/40 = 13/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/72+7/40 3/72+14/40 3/72+7/80 9/72+7/40 3/72+21/40 15/72+7/40 3/72+35/40 21/72+7/40 3/72+49/40