Answers

Add 90/54 and 56/49

1^st number: 1 36/54, 2^nd number: 1 7/49

90/54 + 56/49 is 59/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 49 is 2646
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2646
2. For the 1st fraction, since 54 × 49 = 2646,
   90/54 = 90 × 49/54 × 49 = 4410/2646
3. Likewise, for the 2nd fraction, since 49 × 54 = 2646,
   56/49 = 56 × 54/49 × 54 = 3024/2646
4. Add the two like fractions:
   4410/2646 + 3024/2646 = 4410 + 3024/2646 = 7434/2646
5. 7434/2646 simplified gives 59/21
6. So, 90/54 + 56/49 = 59/21
   In mixed form: 217/21

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