Answers

Add 90/84 and 15/64

1^st number: 1 6/84, 2^nd number: 15/64

90/84 + 15/64 is 585/448.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 64 is 1344
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1344
2. For the 1st fraction, since 84 × 16 = 1344,
   90/84 = 90 × 16/84 × 16 = 1440/1344
3. Likewise, for the 2nd fraction, since 64 × 21 = 1344,
   15/64 = 15 × 21/64 × 21 = 315/1344
4. Add the two like fractions:
   1440/1344 + 315/1344 = 1440 + 315/1344 = 1755/1344
5. 1755/1344 simplified gives 585/448
6. So, 90/84 + 15/64 = 585/448
   In mixed form: 1137/448

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