Add 90/18 and 90/84
1st number: 5 0/18, 2nd number: 1 6/84
90/18 + 90/84 is 85/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 84 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 18 × 14 = 252,
90/18 = 90 × 14/18 × 14 = 1260/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
90/84 = 90 × 3/84 × 3 = 270/252 - Add the two like fractions:
1260/252 + 270/252 = 1260 + 270/252 = 1530/252 - 1530/252 simplified gives 85/14
- So, 90/18 + 90/84 = 85/14
In mixed form: 61/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/36+90/84 90/54+90/84