Add 84/90 and 15/27
84/90 + 15/27 is 67/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 27 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 90 × 3 = 270,
84/90 = 84 × 3/90 × 3 = 252/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
15/27 = 15 × 10/27 × 10 = 150/270 - Add the two like fractions:
252/270 + 150/270 = 252 + 150/270 = 402/270 - 402/270 simplified gives 67/45
- So, 84/90 + 15/27 = 67/45
In mixed form: 122/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/90+30/27 84/90+15/54 84/90+45/27 84/90+15/81 84/90+75/27