Add 81/90 and 10/98
81/90 + 10/98 is 491/490.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 98 is 4410
Next, find the equivalent fraction of both fractional numbers with denominator 4410 - For the 1st fraction, since 90 × 49 = 4410,
81/90 = 81 × 49/90 × 49 = 3969/4410 - Likewise, for the 2nd fraction, since 98 × 45 = 4410,
10/98 = 10 × 45/98 × 45 = 450/4410 - Add the two like fractions:
3969/4410 + 450/4410 = 3969 + 450/4410 = 4419/4410 - 4419/4410 simplified gives 491/490
- So, 81/90 + 10/98 = 491/490
In mixed form: 11/490
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/90+20/98 81/90+30/98 81/90+50/98 81/90+70/98