3x-3=7x+9

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Solution for 3x-3=7x+9 equation: 



3x-3=7x+9

We move all terms to the left:

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

We get rid of parentheses

3x-7x-9-3=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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