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