Add 12/30 and 63/8
1st number: 12/30, 2nd number: 7 7/8
12/30 + 63/8 is 331/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
12/30 = 12 × 4/30 × 4 = 48/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
63/8 = 63 × 15/8 × 15 = 945/120 - Add the two like fractions:
48/120 + 945/120 = 48 + 945/120 = 993/120 - 993/120 simplified gives 331/40
- So, 12/30 + 63/8 = 331/40
In mixed form: 811/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/30+63/8 12/60+63/8 12/30+63/16 36/30+63/8 12/90+63/8 12/30+63/24 60/30+63/8 12/30+63/40 84/30+63/8 12/30+63/56