Add 6/84 and 90/18
1st number: 6/84, 2nd number: 5 0/18
6/84 + 90/18 is 71/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 18 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
6/84 = 6 × 3/84 × 3 = 18/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
90/18 = 90 × 14/18 × 14 = 1260/252 - Add the two like fractions:
18/252 + 1260/252 = 18 + 1260/252 = 1278/252 - 1278/252 simplified gives 71/14
- So, 6/84 + 90/18 = 71/14
In mixed form: 51/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/84+90/18 6/84+90/36 18/84+90/18 6/84+90/54 30/84+90/18 42/84+90/18