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(x+4)=84
We simplify the equation to the form, which is simple to understand
(x+4)=84
Remove unnecessary parentheses
x+4=84
We move all terms containing x to the left and all other terms to the right.
+1x=+84-4
We simplify left and right side of the equation.
+1x=+80
We divide both sides of the equation by 1 to get x.
x=80
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