-18=2+u/4

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Solution for -18=2+u/4 equation: 



-18=2+u/4

We move all terms to the left:

-18-(2+u/4)=0

We add all the numbers together, and all the variables

-(u/4+2)-18=0

We get rid of parentheses

-u/4-2-18=0

We multiply all the terms by the denominator


-u-2*4-18*4=0

We add all the numbers together, and all the variables

-1u-80=0

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

-u=80

u=80/-1

u=-80

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