Add 15/80 and 63/8
1st number: 15/80, 2nd number: 7 7/8
15/80 + 63/8 is 129/16.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 8 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
15/80 = 15 × 1/80 × 1 = 15/80 - Likewise, for the 2nd fraction, since 8 × 10 = 80,
63/8 = 63 × 10/8 × 10 = 630/80 - Add the two like fractions:
15/80 + 630/80 = 15 + 630/80 = 645/80 - 645/80 simplified gives 129/16
- So, 15/80 + 63/8 = 129/16
In mixed form: 81/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/80+63/8 15/80+63/16 45/80+63/8 15/80+63/24 75/80+63/8 15/80+63/40 15/80+63/56