18u-45=9u

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Solution for 18u-45=9u equation: 



18u-45=9u

We move all terms to the left:

18u-45-(9u)=0

We add all the numbers together, and all the variables

9u-45=0

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

9u=45

u=45/9

u=5

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