-12=8+4u

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Solution for -12=8+4u equation: 



-12=8+4u

We move all terms to the left:

-12-(8+4u)=0

We add all the numbers together, and all the variables

-(4u+8)-12=0

We get rid of parentheses

-4u-8-12=0

We add all the numbers together, and all the variables

-4u-20=0

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

-4u=20

u=20/-4

u=-5

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