18=2(u-6)-7u

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Solution for 18=2(u-6)-7u equation: 



18=2(u-6)-7u

We move all terms to the left:

18-(2(u-6)-7u)=0



We calculate terms in parentheses: -(2(u-6)-7u), so:

2(u-6)-7u

We add all the numbers together, and all the variables

-7u+2(u-6)

We multiply parentheses

-7u+2u-12

We add all the numbers together, and all the variables

-5u-12

Back to the equation:

-(-5u-12)



We get rid of parentheses

5u+12+18=0

We add all the numbers together, and all the variables

5u+30=0

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

5u=-30

u=-30/5

u=-6

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