4x-40=7(2-2x)

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Solution for 4x-40=7(2-2x) equation: 



4x-40=7(2-2x)

We move all terms to the left:

4x-40-(7(2-2x))=0

We add all the numbers together, and all the variables

4x-(7(-2x+2))-40=0



We calculate terms in parentheses: -(7(-2x+2)), so:

7(-2x+2)

We multiply parentheses

-14x+14

Back to the equation:

-(-14x+14)



We get rid of parentheses

4x+14x-14-40=0

We add all the numbers together, and all the variables

18x-54=0

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

18x=54

x=54/18

x=3

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