Add 20/12 and 27/63
1st number: 1 8/12, 2nd number: 27/63
20/12 + 27/63 is 44/21.
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,
20/12 = 20 × 21/12 × 21 = 420/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
27/63 = 27 × 4/63 × 4 = 108/252 - Add the two like fractions:
420/252 + 108/252 = 420 + 108/252 = 528/252 - 528/252 simplified gives 44/21
- So, 20/12 + 27/63 = 44/21
In mixed form: 22/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/12+27/63 20/12+54/63 20/24+27/63 60/12+27/63 20/12+81/63 20/36+27/63 20/60+27/63 20/84+27/63