42-6u=u

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Solution for 42-6u=u equation: 



42-6u=u

We move all terms to the left:

42-6u-(u)=0

We add all the numbers together, and all the variables

-7u+42=0

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

-7u=-42

u=-42/-7

u=+6

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