Add 15/45 and 12/27
15/45 + 12/27 is 7/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 27 is 135
Next, find the equivalent fraction of both fractional numbers with denominator 135 - For the 1st fraction, since 45 × 3 = 135,
15/45 = 15 × 3/45 × 3 = 45/135 - Likewise, for the 2nd fraction, since 27 × 5 = 135,
12/27 = 12 × 5/27 × 5 = 60/135 - Add the two like fractions:
45/135 + 60/135 = 45 + 60/135 = 105/135 - 105/135 simplified gives 7/9
- So, 15/45 + 12/27 = 7/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/45+12/27 15/45+24/27 15/90+12/27 15/45+12/54 15/45+36/27 15/45+12/81 75/45+12/27 15/45+60/27 15/45+84/27