Add 6/15 and 84/90
6/15 + 84/90 is 4/3.
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,
6/15 = 6 × 6/15 × 6 = 36/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
84/90 = 84 × 1/90 × 1 = 84/90 - Add the two like fractions:
36/90 + 84/90 = 36 + 84/90 = 120/90 - 120/90 simplified gives 4/3
- So, 6/15 + 84/90 = 4/3
In mixed form: 11/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/15+84/90 6/30+84/90 18/15+84/90 6/45+84/90 30/15+84/90 6/75+84/90 42/15+84/90