Answers

Add 98/90 and 28/80

1^st number: 1 8/90, 2^nd number: 28/80

98/90 + 28/80 is 259/180.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 80 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 90 × 8 = 720,
   98/90 = 98 × 8/90 × 8 = 784/720
3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
   28/80 = 28 × 9/80 × 9 = 252/720
4. Add the two like fractions:
   784/720 + 252/720 = 784 + 252/720 = 1036/720
5. 1036/720 simplified gives 259/180
6. So, 98/90 + 28/80 = 259/180
   In mixed form: 179/180

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related: ⁹⁸/₉₀+⁵⁶/₈₀ ⁹⁸/₉₀+⁸⁴/₈₀

Add Fractions Calculator