Answers

Add 90/98 and 81/90

90/98 + 81/90 is 891/490.

Steps for adding fractions

1. 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
2. For the 1st fraction, since 98 × 45 = 4410,
   90/98 = 90 × 45/98 × 45 = 4050/4410
3. Likewise, for the 2nd fraction, since 90 × 49 = 4410,
   81/90 = 81 × 49/90 × 49 = 3969/4410
4. Add the two like fractions:
   4050/4410 + 3969/4410 = 4050 + 3969/4410 = 8019/4410
5. 8019/4410 simplified gives 891/490
6. So, 90/98 + 81/90 = 891/490
   In mixed form: 1401/490

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