Add 20/30 and 63/12
1st number: 20/30, 2nd number: 5 3/12
20/30 + 63/12 is 71/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 30 × 2 = 60,
20/30 = 20 × 2/30 × 2 = 40/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
63/12 = 63 × 5/12 × 5 = 315/60 - Add the two like fractions:
40/60 + 315/60 = 40 + 315/60 = 355/60 - 355/60 simplified gives 71/12
- So, 20/30 + 63/12 = 71/12
In mixed form: 511/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/30+63/12 20/60+63/12 20/30+63/24 60/30+63/12 20/90+63/12 20/30+63/36 20/30+63/60 20/30+63/84