u+45=4u

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Solution for u+45=4u equation: 



u+45=4u

We move all terms to the left:

u+45-(4u)=0

We add all the numbers together, and all the variables

-3u+45=0

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

-3u=-45

u=-45/-3

u=+15

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