Add 98/80 and 21/8
1st number: 1 18/80, 2nd number: 2 5/8
98/80 + 21/8 is 77/20.
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,
98/80 = 98 × 1/80 × 1 = 98/80 - Likewise, for the 2nd fraction, since 8 × 10 = 80,
21/8 = 21 × 10/8 × 10 = 210/80 - Add the two like fractions:
98/80 + 210/80 = 98 + 210/80 = 308/80 - 308/80 simplified gives 77/20
- So, 98/80 + 21/8 = 77/20
In mixed form: 317/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/80+42/8 98/80+21/16 98/80+63/8 98/80+21/24 98/80+21/40 98/80+21/56