x=4(x+5)=40

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Solution for x=4(x+5)=40 equation: 



x=4(x+5)=40

We move all terms to the left:

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



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

4(x+5)

We multiply parentheses

4x+20

Back to the equation:

-(4x+20)



We get rid of parentheses

x-4x-20=0

We add all the numbers together, and all the variables

-3x-20=0

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

-3x=20

x=20/-3

x=-6+2/3

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