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

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



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

We move all terms to the left:

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

We multiply parentheses

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

We get rid of parentheses

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

We add all the numbers together, and all the variables

-7x-5=0

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

-7x=5

x=5/-7

x=-5/7

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