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-x+(-3x+3)=3
We simplify the equation to the form, which is simple to understand
-x+(-3x+3)=3
Remove unnecessary parentheses
-x-3x+3=+3
We move all terms containing x to the left and all other terms to the right.
-1x-3x=+3-3
We simplify left and right side of the equation.
-4x=0
We divide both sides of the equation by -4 to get x.
x=-0
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