5+3x+9-x=12

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Solution for 5+3x+9-x=12 equation: 



5+3x+9-x=12

We move all terms to the left:

5+3x+9-x-(12)=0

We add all the numbers together, and all the variables

2x+2=0

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

2x=-2

x=-2/2

x=-1

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