Add 3/18 and 30/84
3/18 + 30/84 is 11/21.
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,
30/84 = 30 × 3/84 × 3 = 90/252 - Add the two like fractions:
42/252 + 90/252 = 42 + 90/252 = 132/252 - 132/252 simplified gives 11/21
- So, 3/18 + 30/84 = 11/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/18+30/84 3/18+60/84 3/36+30/84 9/18+30/84 3/18+90/84 3/54+30/84 15/18+30/84 3/90+30/84 21/18+30/84