Add 12/15 and 35/90
12/15 + 35/90 is 107/90.
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,
35/90 = 35 × 1/90 × 1 = 35/90 - Add the two like fractions:
72/90 + 35/90 = 72 + 35/90 = 107/90 - So, 12/15 + 35/90 = 107/90
In mixed form: 117/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/15+35/90 12/15+70/90 12/30+35/90 36/15+35/90 12/45+35/90 60/15+35/90 12/75+35/90 84/15+35/90