Add 21/6 and 8/90
1st number: 3 3/6, 2nd number: 8/90
21/6 + 8/90 is 323/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 6 × 15 = 90,
21/6 = 21 × 15/6 × 15 = 315/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
8/90 = 8 × 1/90 × 1 = 8/90 - Add the two like fractions:
315/90 + 8/90 = 315 + 8/90 = 323/90 - So, 21/6 + 8/90 = 323/90
In mixed form: 353/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/6+8/90 21/6+16/90 21/12+8/90 63/6+8/90 21/6+24/90 21/18+8/90 21/6+40/90 21/30+8/90 21/6+56/90 21/42+8/90