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165=x+x+3
We simplify the equation to the form, which is simple to understand
165=x+x+3
We move all terms containing x to the left and all other terms to the right.
-1x-1x=+3-165
We simplify left and right side of the equation.
-2x=-162
We divide both sides of the equation by -2 to get x.
x=81
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