3-(x+4)=x-9

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



3-(x+4)=x-9

We move all terms to the left:

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

We get rid of parentheses

-x-x-4+9+3=0

We add all the numbers together, and all the variables

-2x+8=0

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

-2x=-8

x=-8/-2

x=+4

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