Answers

Add 98/90 and 63/84

1^st number: 1 8/90, 2^nd number: 63/84

98/90 + 63/84 is 331/180.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 84 is 1260
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1260
2. For the 1st fraction, since 90 × 14 = 1260,
   98/90 = 98 × 14/90 × 14 = 1372/1260
3. Likewise, for the 2nd fraction, since 84 × 15 = 1260,
   63/84 = 63 × 15/84 × 15 = 945/1260
4. Add the two like fractions:
   1372/1260 + 945/1260 = 1372 + 945/1260 = 2317/1260
5. 2317/1260 simplified gives 331/180
6. So, 98/90 + 63/84 = 331/180
   In mixed form: 1151/180

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