-4+5u=9u

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Solution for -4+5u=9u equation: 



-4+5u=9u

We move all terms to the left:

-4+5u-(9u)=0

We add all the numbers together, and all the variables

-4u-4=0

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

-4u=4

u=4/-4

u=-1

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