Add 12/15 and 36/90
12/15 + 36/90 is 6/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
12/15 = 12 × 6/15 × 6 = 72/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
36/90 = 36 × 1/90 × 1 = 36/90 - Add the two like fractions:
72/90 + 36/90 = 72 + 36/90 = 108/90 - 108/90 simplified gives 6/5
- So, 12/15 + 36/90 = 6/5
In mixed form: 11/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/15+36/90 12/15+72/90 12/30+36/90 36/15+36/90 12/45+36/90 60/15+36/90 12/75+36/90 84/15+36/90