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3x-x+4=[2x-1]
We simplify the equation to the form, which is simple to understand
3x-x+4=(2x-1)
Remove unnecessary parentheses
3x-x+4=2x-1
We move all terms containing x to the left and all other terms to the right.
+3x-1x-2x=-1-4
We simplify left and right side of the equation.
0x=-5
0=-5
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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