30=5(u+4)-7u

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Solution for 30=5(u+4)-7u equation: 



30=5(u+4)-7u

We move all terms to the left:

30-(5(u+4)-7u)=0



We calculate terms in parentheses: -(5(u+4)-7u), so:

5(u+4)-7u

We add all the numbers together, and all the variables

-7u+5(u+4)

We multiply parentheses

-7u+5u+20

We add all the numbers together, and all the variables

-2u+20

Back to the equation:

-(-2u+20)



We get rid of parentheses

2u-20+30=0

We add all the numbers together, and all the variables

2u+10=0

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

2u=-10

u=-10/2

u=-5

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