18=3-k

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Solution for 18=3-k equation: 



18=3-k

We move all terms to the left:

18-(3-k)=0

We add all the numbers together, and all the variables

-(-1k+3)+18=0

We get rid of parentheses

1k-3+18=0

We add all the numbers together, and all the variables

k+15=0

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

k=-15

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