Add 3/12 and 40/72
3/12 + 40/72 is 29/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 12 × 6 = 72,
3/12 = 3 × 6/12 × 6 = 18/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
40/72 = 40 × 1/72 × 1 = 40/72 - Add the two like fractions:
18/72 + 40/72 = 18 + 40/72 = 58/72 - 58/72 simplified gives 29/36
- So, 3/12 + 40/72 = 29/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/12+40/72 3/12+80/72 3/24+40/72 9/12+40/72 3/36+40/72 15/12+40/72 3/60+40/72 21/12+40/72 3/84+40/72