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