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

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



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

We move all terms to the left:

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



We calculate terms in parentheses: -((-2x)-40), so:

(-2x)-40

We get rid of parentheses

-2x-40

Back to the equation:

-(-2x-40)



We get rid of parentheses

7x+2x+40-4=0

We add all the numbers together, and all the variables

9x+36=0

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

9x=-36

x=-36/9

x=-4

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