Add 63/84 and 54/18
1st number: 63/84, 2nd number: 3 0/18
63/84 + 54/18 is 15/4.
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,
63/84 = 63 × 3/84 × 3 = 189/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
54/18 = 54 × 14/18 × 14 = 756/252 - Add the two like fractions:
189/252 + 756/252 = 189 + 756/252 = 945/252 - 945/252 simplified gives 15/4
- So, 63/84 + 54/18 = 15/4
In mixed form: 33/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/84+54/36 63/84+54/90