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4-(2x+1)=13
We simplify the equation to the form, which is simple to understand
4-(2x+1)=13
Remove unnecessary parentheses
4-2x-1=13
We move all terms containing x to the left and all other terms to the right.
-2x=+13-4+1
We simplify left and right side of the equation.
-2x=+10
We divide both sides of the equation by -2 to get x.
x=-5
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