7x+9=3(x-1)

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



7x+9=3(x-1)

We move all terms to the left:

7x+9-(3(x-1))=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 get rid of parentheses

7x-3x+3+9=0

We add all the numbers together, and all the variables

4x+12=0

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

4x=-12

x=-12/4

x=-3

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