-1=7(x-3)-2x

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Solution for -1=7(x-3)-2x equation: 



-1=7(x-3)-2x

We move all terms to the left:

-1-(7(x-3)-2x)=0



We calculate terms in parentheses: -(7(x-3)-2x), so:

7(x-3)-2x

We add all the numbers together, and all the variables

-2x+7(x-3)

We multiply parentheses

-2x+7x-21

We add all the numbers together, and all the variables

5x-21

Back to the equation:

-(5x-21)



We get rid of parentheses

-5x+21-1=0

We add all the numbers together, and all the variables

-5x+20=0

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

-5x=-20

x=-20/-5

x=+4

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