-3(7x-3)+9x=-3(x+1)

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Solution for -3(7x-3)+9x=-3(x+1) equation: 



-3(7x-3)+9x=-3(x+1)

We move all terms to the left:

-3(7x-3)+9x-(-3(x+1))=0

We add all the numbers together, and all the variables

9x-3(7x-3)-(-3(x+1))=0

We multiply parentheses

9x-21x-(-3(x+1))+9=0



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

-3(x+1)

We multiply parentheses

-3x-3

Back to the equation:

-(-3x-3)



We add all the numbers together, and all the variables

-12x-(-3x-3)+9=0

We get rid of parentheses

-12x+3x+3+9=0

We add all the numbers together, and all the variables

-9x+12=0

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

-9x=-12

x=-12/-9

x=1+1/3

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