Add 20/25 and 98/90
1st number: 20/25, 2nd number: 1 8/90
20/25 + 98/90 is 17/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 90 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 25 × 18 = 450,
20/25 = 20 × 18/25 × 18 = 360/450 - Likewise, for the 2nd fraction, since 90 × 5 = 450,
98/90 = 98 × 5/90 × 5 = 490/450 - Add the two like fractions:
360/450 + 490/450 = 360 + 490/450 = 850/450 - 850/450 simplified gives 17/9
- So, 20/25 + 98/90 = 17/9
In mixed form: 18/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/25+98/90 20/50+98/90 60/25+98/90 20/75+98/90