3x-(4x+7)=3x+9

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Solution for 3x-(4x+7)=3x+9 equation: 



3x-(4x+7)=3x+9

We move all terms to the left:

3x-(4x+7)-(3x+9)=0

We get rid of parentheses

3x-4x-3x-7-9=0

We add all the numbers together, and all the variables

-4x-16=0

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

-4x=16

x=16/-4

x=-4

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