Add 90/72 and 15/27
1st number: 1 18/72, 2nd number: 15/27
90/72 + 15/27 is 65/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 27 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 72 × 3 = 216,
90/72 = 90 × 3/72 × 3 = 270/216 - Likewise, for the 2nd fraction, since 27 × 8 = 216,
15/27 = 15 × 8/27 × 8 = 120/216 - Add the two like fractions:
270/216 + 120/216 = 270 + 120/216 = 390/216 - 390/216 simplified gives 65/36
- So, 90/72 + 15/27 = 65/36
In mixed form: 129/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/72+30/27 90/72+15/54 90/72+45/27 90/72+15/81 90/72+75/27