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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We multiply parentheses

-14x-(3(-3x+7))-49=0



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

3(-3x+7)

We multiply parentheses

-9x+21

Back to the equation:

-(-9x+21)



We get rid of parentheses

-14x+9x-21-49=0

We add all the numbers together, and all the variables

-5x-70=0

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

-5x=70

x=70/-5

x=-14

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