15=7+2k

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Solution for 15=7+2k equation: 



15=7+2k

We move all terms to the left:

15-(7+2k)=0

We add all the numbers together, and all the variables

-(2k+7)+15=0

We get rid of parentheses

-2k-7+15=0

We add all the numbers together, and all the variables

-2k+8=0

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

-2k=-8

k=-8/-2

k=+4

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