Add 3/18 and 90/84
1st number: 3/18, 2nd number: 1 6/84
3/18 + 90/84 is 26/21.
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,
3/18 = 3 × 14/18 × 14 = 42/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
90/84 = 90 × 3/84 × 3 = 270/252 - Add the two like fractions:
42/252 + 270/252 = 42 + 270/252 = 312/252 - 312/252 simplified gives 26/21
- So, 3/18 + 90/84 = 26/21
In mixed form: 15/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/18+90/84 3/36+90/84 9/18+90/84 3/54+90/84 15/18+90/84 3/90+90/84 21/18+90/84