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-4x+7-x+2=9
We simplify the equation to the form, which is simple to understand
-4x+7-x+2=9
We move all terms containing x to the left and all other terms to the right.
-4x-1x=+9-7-2
We simplify left and right side of the equation.
-5x=0
We divide both sides of the equation by -5 to get x.
x=-0
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