30=8(5+x)-4x

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Solution for 30=8(5+x)-4x equation: 



30=8(5+x)-4x

We move all terms to the left:

30-(8(5+x)-4x)=0

We add all the numbers together, and all the variables

-(8(x+5)-4x)+30=0



We calculate terms in parentheses: -(8(x+5)-4x), so:

8(x+5)-4x

We add all the numbers together, and all the variables

-4x+8(x+5)

We multiply parentheses

-4x+8x+40

We add all the numbers together, and all the variables

4x+40

Back to the equation:

-(4x+40)



We get rid of parentheses

-4x-40+30=0

We add all the numbers together, and all the variables

-4x-10=0

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

-4x=10

x=10/-4

x=-2+1/2

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