Add 15/90 and 12/27
15/90 + 12/27 is 11/18.
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,
15/90 = 15 × 3/90 × 3 = 45/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
12/27 = 12 × 10/27 × 10 = 120/270 - Add the two like fractions:
45/270 + 120/270 = 45 + 120/270 = 165/270 - 165/270 simplified gives 11/18
- So, 15/90 + 12/27 = 11/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/90+12/27 15/90+24/27 15/90+12/54 45/90+12/27 15/90+36/27 15/90+12/81 75/90+12/27 15/90+60/27 15/90+84/27