Add 6/21 and 90/84
1st number: 6/21, 2nd number: 1 6/84
6/21 + 90/84 is 19/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
6/21 = 6 × 4/21 × 4 = 24/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
90/84 = 90 × 1/84 × 1 = 90/84 - Add the two like fractions:
24/84 + 90/84 = 24 + 90/84 = 114/84 - 114/84 simplified gives 19/14
- So, 6/21 + 90/84 = 19/14
In mixed form: 15/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/21+90/84 6/42+90/84 18/21+90/84 6/63+90/84 30/21+90/84 42/21+90/84