Add 84/98 and 15/90
84/98 + 15/90 is 43/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 90 is 4410
Next, find the equivalent fraction of both fractional numbers with denominator 4410 - For the 1st fraction, since 98 × 45 = 4410,
84/98 = 84 × 45/98 × 45 = 3780/4410 - Likewise, for the 2nd fraction, since 90 × 49 = 4410,
15/90 = 15 × 49/90 × 49 = 735/4410 - Add the two like fractions:
3780/4410 + 735/4410 = 3780 + 735/4410 = 4515/4410 - 4515/4410 simplified gives 43/42
- So, 84/98 + 15/90 = 43/42
In mixed form: 11/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/98+30/90 84/98+45/90 84/98+75/90