Add 20/45 and 81/98
20/45 + 81/98 is 1121/882.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 98 is 4410
Next, find the equivalent fraction of both fractional numbers with denominator 4410 - For the 1st fraction, since 45 × 98 = 4410,
20/45 = 20 × 98/45 × 98 = 1960/4410 - Likewise, for the 2nd fraction, since 98 × 45 = 4410,
81/98 = 81 × 45/98 × 45 = 3645/4410 - Add the two like fractions:
1960/4410 + 3645/4410 = 1960 + 3645/4410 = 5605/4410 - 5605/4410 simplified gives 1121/882
- So, 20/45 + 81/98 = 1121/882
In mixed form: 1239/882
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/45+81/98 20/90+81/98 60/45+81/98