12-4u=-4

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Solution for 12-4u=-4 equation: 



12-4u=-4

We move all terms to the left:

12-4u-(-4)=0

We add all the numbers together, and all the variables

-4u+16=0

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

-4u=-16

u=-16/-4

u=+4

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