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2x-4x-12=-2x+7-12
We move all terms to the left:
2x-4x-12-(-2x+7-12)=0
We add all the numbers together, and all the variables
2x-4x-(-2x-5)-12=0
We add all the numbers together, and all the variables
-2x-(-2x-5)-12=0
We get rid of parentheses
-2x+2x+5-12=0
We add all the numbers together, and all the variables
-7!=0
There is no solution for this equation
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