Add 90/15 and 8/9
1st number: 6 0/15, 2nd number: 8/9
90/15 + 8/9 is 62/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 9 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 15 × 3 = 45,
90/15 = 90 × 3/15 × 3 = 270/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
8/9 = 8 × 5/9 × 5 = 40/45 - Add the two like fractions:
270/45 + 40/45 = 270 + 40/45 = 310/45 - 310/45 simplified gives 62/9
- So, 90/15 + 8/9 = 62/9
In mixed form: 68/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/15+16/9 90/30+8/9 90/15+8/18 90/15+24/9 90/45+8/9 90/15+8/27 90/15+40/9 90/75+8/9 90/15+8/45 90/15+56/9 90/15+8/63