Add 54/84 and 72/18
1st number: 54/84, 2nd number: 4 0/18
54/84 + 72/18 is 65/14.
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,
72/18 = 72 × 14/18 × 14 = 1008/252 - Add the two like fractions:
162/252 + 1008/252 = 162 + 1008/252 = 1170/252 - 1170/252 simplified gives 65/14
- So, 54/84 + 72/18 = 65/14
In mixed form: 49/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/84+72/36 54/84+72/54 54/84+72/90