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9x-81-3=-8x-16
We simplify the equation to the form, which is simple to understand
9x-81-3=-8x-16
We move all terms containing x to the left and all other terms to the right.
+9x+8x=-16+81+3
We simplify left and right side of the equation.
+17x=+68
We divide both sides of the equation by 17 to get x.
x=4
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