18=6-2u

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Solution for 18=6-2u equation: 



18=6-2u

We move all terms to the left:

18-(6-2u)=0

We add all the numbers together, and all the variables

-(-2u+6)+18=0

We get rid of parentheses

2u-6+18=0

We add all the numbers together, and all the variables

2u+12=0

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

2u=-12

u=-12/2

u=-6

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