Add 54/72 and 3/9
54/72 + 3/9 is 13/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 9 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
54/72 = 54 × 1/72 × 1 = 54/72 - Likewise, for the 2nd fraction, since 9 × 8 = 72,
3/9 = 3 × 8/9 × 8 = 24/72 - Add the two like fractions:
54/72 + 24/72 = 54 + 24/72 = 78/72 - 78/72 simplified gives 13/12
- So, 54/72 + 3/9 = 13/12
In mixed form: 11/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/72+6/9 54/72+3/18 54/72+3/27 54/72+15/9 54/72+3/45 54/72+21/9 54/72+3/63