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3x+4-9x+2=3x-9x+7
We move all terms to the left:
3x+4-9x+2-(3x-9x+7)=0
We add all the numbers together, and all the variables
3x-9x-(-6x+7)+4+2=0
We add all the numbers together, and all the variables
-6x-(-6x+7)+6=0
We get rid of parentheses
-6x+6x-7+6=0
We add all the numbers together, and all the variables
-1!=0
There is no solution for this equation
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