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-8-3x=13
We simplify the equation to the form, which is simple to understand
-8-3x=13
We move all terms containing x to the left and all other terms to the right.
-3x=+13+8
We simplify left and right side of the equation.
-3x=+21
We divide both sides of the equation by -3 to get x.
x=-7
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