Add 18/72 and 40/9
1st number: 18/72, 2nd number: 4 4/9
18/72 + 40/9 is 169/36.
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,
18/72 = 18 × 1/72 × 1 = 18/72 - Likewise, for the 2nd fraction, since 9 × 8 = 72,
40/9 = 40 × 8/9 × 8 = 320/72 - Add the two like fractions:
18/72 + 320/72 = 18 + 320/72 = 338/72 - 338/72 simplified gives 169/36
- So, 18/72 + 40/9 = 169/36
In mixed form: 425/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/72+40/9 18/72+80/9 18/72+40/18 54/72+40/9 18/72+40/27 90/72+40/9 18/72+40/45 18/72+40/63