Answers

Add 15/84 and 9/64

15/84 + 9/64 is 143/448.

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,
   15/84 = 15 × 16/84 × 16 = 240/1344
3. Likewise, for the 2nd fraction, since 64 × 21 = 1344,
   9/64 = 9 × 21/64 × 21 = 189/1344
4. Add the two like fractions:
   240/1344 + 189/1344 = 240 + 189/1344 = 429/1344
5. 429/1344 simplified gives 143/448
6. So, 15/84 + 9/64 = 143/448

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