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-3x-40x=0
We simplify the equation to the form, which is simple to understand
-3x-40x=0
We move all terms containing x to the left and all other terms to the right.
-3x-40x=0
We simplify left and right side of the equation.
-43x=0
We divide both sides of the equation by -43 to get x.
x=-0
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