Answers

Add 90/50 and 90/64

1^st number: 1 40/50, 2^nd number: 1 26/64

90/50 + 90/64 is 513/160.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 50 and 64 is 1600
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1600
2. For the 1st fraction, since 50 × 32 = 1600,
   90/50 = 90 × 32/50 × 32 = 2880/1600
3. Likewise, for the 2nd fraction, since 64 × 25 = 1600,
   90/64 = 90 × 25/64 × 25 = 2250/1600
4. Add the two like fractions:
   2880/1600 + 2250/1600 = 2880 + 2250/1600 = 5130/1600
5. 5130/1600 simplified gives 513/160
6. So, 90/50 + 90/64 = 513/160
   In mixed form: 333/160

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