3+k=9+2k

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Solution for 3+k=9+2k equation: 



3+k=9+2k

We move all terms to the left:

3+k-(9+2k)=0

We add all the numbers together, and all the variables

k-(2k+9)+3=0

We get rid of parentheses

k-2k-9+3=0

We add all the numbers together, and all the variables

-1k-6=0

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

-k=6

k=6/-1

k=-6

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