12k-7k+3k-5k+2k=15

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Solution for 12k-7k+3k-5k+2k=15 equation: 



12k-7k+3k-5k+2k=15

We move all terms to the left:

12k-7k+3k-5k+2k-(15)=0

We add all the numbers together, and all the variables

5k-15=0

We move all terms containing k to the left, all other terms to the right

5k=15

k=15/5

k=3

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