Answers

Add 90/80 and 20/98

1^st number: 1 10/80, 2^nd number: 20/98

90/80 + 20/98 is 521/392.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 98 is 3920
   
   Next, find the equivalent fraction of both fractional numbers with denominator 3920
2. For the 1st fraction, since 80 × 49 = 3920,
   90/80 = 90 × 49/80 × 49 = 4410/3920
3. Likewise, for the 2nd fraction, since 98 × 40 = 3920,
   20/98 = 20 × 40/98 × 40 = 800/3920
4. Add the two like fractions:
   4410/3920 + 800/3920 = 4410 + 800/3920 = 5210/3920
5. 5210/3920 simplified gives 521/392
6. So, 90/80 + 20/98 = 521/392
   In mixed form: 1129/392

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