Add 90/6 and 21/10
1st number: 15 0/6, 2nd number: 2 1/10
90/6 + 21/10 is 171/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 10 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 6 × 5 = 30,
90/6 = 90 × 5/6 × 5 = 450/30 - Likewise, for the 2nd fraction, since 10 × 3 = 30,
21/10 = 21 × 3/10 × 3 = 63/30 - Add the two like fractions:
450/30 + 63/30 = 450 + 63/30 = 513/30 - 513/30 simplified gives 171/10
- So, 90/6 + 21/10 = 171/10
In mixed form: 171/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/6+42/10 90/12+21/10 90/6+21/20 90/6+63/10 90/18+21/10 90/6+21/30 90/30+21/10 90/6+21/50 90/42+21/10 90/6+21/70