Add 1/18 and 90/84
1st number: 1/18, 2nd number: 1 6/84
1/18 + 90/84 is 71/63.
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,
1/18 = 1 × 14/18 × 14 = 14/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
90/84 = 90 × 3/84 × 3 = 270/252 - Add the two like fractions:
14/252 + 270/252 = 14 + 270/252 = 284/252 - 284/252 simplified gives 71/63
- So, 1/18 + 90/84 = 71/63
In mixed form: 18/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/18+90/84 1/36+90/84 3/18+90/84 1/54+90/84 5/18+90/84 1/90+90/84 7/18+90/84