Answers

Add 90/40 and 4/98

1^st number: 2 10/40, 2^nd number: 4/98

90/40 + 4/98 is 449/196.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 98 is 1960
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1960
2. For the 1st fraction, since 40 × 49 = 1960,
   90/40 = 90 × 49/40 × 49 = 4410/1960
3. Likewise, for the 2nd fraction, since 98 × 20 = 1960,
   4/98 = 4 × 20/98 × 20 = 80/1960
4. Add the two like fractions:
   4410/1960 + 80/1960 = 4410 + 80/1960 = 4490/1960
5. 4490/1960 simplified gives 449/196
6. So, 90/40 + 4/98 = 449/196
   In mixed form: 257/196

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