Add 28/98 and 81/90
28/98 + 81/90 is 83/70.
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,
28/98 = 28 × 45/98 × 45 = 1260/4410 - Likewise, for the 2nd fraction, since 90 × 49 = 4410,
81/90 = 81 × 49/90 × 49 = 3969/4410 - Add the two like fractions:
1260/4410 + 3969/4410 = 1260 + 3969/4410 = 5229/4410 - 5229/4410 simplified gives 83/70
- So, 28/98 + 81/90 = 83/70
In mixed form: 113/70
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