-18=-6+4u

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Solution for -18=-6+4u equation: 



-18=-6+4u

We move all terms to the left:

-18-(-6+4u)=0

We add all the numbers together, and all the variables

-(4u-6)-18=0

We get rid of parentheses

-4u+6-18=0

We add all the numbers together, and all the variables

-4u-12=0

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

-4u=12

u=12/-4

u=-3

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