Add 5/12 and 81/63
1st number: 5/12, 2nd number: 1 18/63
5/12 + 81/63 is 143/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 63 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 12 × 21 = 252,
5/12 = 5 × 21/12 × 21 = 105/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
81/63 = 81 × 4/63 × 4 = 324/252 - Add the two like fractions:
105/252 + 324/252 = 105 + 324/252 = 429/252 - 429/252 simplified gives 143/84
- So, 5/12 + 81/63 = 143/84
In mixed form: 159/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/12+81/63 5/24+81/63 15/12+81/63 5/36+81/63 25/12+81/63 5/60+81/63 35/12+81/63 5/84+81/63