8=-4+2u

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Solution for 8=-4+2u equation: 



8=-4+2u

We move all terms to the left:

8-(-4+2u)=0

We add all the numbers together, and all the variables

-(2u-4)+8=0

We get rid of parentheses

-2u+4+8=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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