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