Add 20/80 and 98/90
1st number: 20/80, 2nd number: 1 8/90
20/80 + 98/90 is 241/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 90 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
20/80 = 20 × 9/80 × 9 = 180/720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,
98/90 = 98 × 8/90 × 8 = 784/720 - Add the two like fractions:
180/720 + 784/720 = 180 + 784/720 = 964/720 - 964/720 simplified gives 241/180
- So, 20/80 + 98/90 = 241/180
In mixed form: 161/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/80+98/90 60/80+98/90