-3(7+5x)=3(-1-3x)

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Solution for -3(7+5x)=3(-1-3x) equation: 



-3(7+5x)=3(-1-3x)

We move all terms to the left:

-3(7+5x)-(3(-1-3x))=0

We add all the numbers together, and all the variables

-3(5x+7)-(3(-3x-1))=0

We multiply parentheses

-15x-(3(-3x-1))-21=0



We calculate terms in parentheses: -(3(-3x-1)), so:

3(-3x-1)

We multiply parentheses

-9x-3

Back to the equation:

-(-9x-3)



We get rid of parentheses

-15x+9x+3-21=0

We add all the numbers together, and all the variables

-6x-18=0

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

-6x=18

x=18/-6

x=-3

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