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(x+1+x+2)=99
We simplify the equation to the form, which is simple to understand
(x+1+x+2)=99
Remove unnecessary parentheses
+3+2x=99
We move all terms containing x to the left and all other terms to the right.
+2x=+99-3
We simplify left and right side of the equation.
+2x=+96
We divide both sides of the equation by 2 to get x.
x=48
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