Answers

Add 90/84 and 40/49

1^st number: 1 6/84, 2^nd number: 40/49

90/84 + 40/49 is 185/98.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 49 is 588
   
   Next, find the equivalent fraction of both fractional numbers with denominator 588
2. For the 1st fraction, since 84 × 7 = 588,
   90/84 = 90 × 7/84 × 7 = 630/588
3. Likewise, for the 2nd fraction, since 49 × 12 = 588,
   40/49 = 40 × 12/49 × 12 = 480/588
4. Add the two like fractions:
   630/588 + 480/588 = 630 + 480/588 = 1110/588
5. 1110/588 simplified gives 185/98
6. So, 90/84 + 40/49 = 185/98
   In mixed form: 187/98

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