Add 54/84 and 20/18
1st number: 54/84, 2nd number: 1 2/18
54/84 + 20/18 is 221/126.
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,
54/84 = 54 × 3/84 × 3 = 162/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
20/18 = 20 × 14/18 × 14 = 280/252 - Add the two like fractions:
162/252 + 280/252 = 162 + 280/252 = 442/252 - 442/252 simplified gives 221/126
- So, 54/84 + 20/18 = 221/126
In mixed form: 195/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/84+40/18 54/84+20/36 54/84+60/18 54/84+20/54 54/84+20/90