Add 6/21 and 90/10
1st number: 6/21, 2nd number: 9 0/10
6/21 + 90/10 is 65/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 10 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
6/21 = 6 × 10/21 × 10 = 60/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
90/10 = 90 × 21/10 × 21 = 1890/210 - Add the two like fractions:
60/210 + 1890/210 = 60 + 1890/210 = 1950/210 - 1950/210 simplified gives 65/7
- So, 6/21 + 90/10 = 65/7
In mixed form: 92/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/21+90/10 6/42+90/10 6/21+90/20 18/21+90/10 6/63+90/10 6/21+90/30 30/21+90/10 6/21+90/50 42/21+90/10 6/21+90/70