-3-8u=-4u+9

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Solution for -3-8u=-4u+9 equation: 



-3-8u=-4u+9

We move all terms to the left:

-3-8u-(-4u+9)=0

We get rid of parentheses

-8u+4u-9-3=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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