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1+2(1+2)+1+2=0
We simplify the equation to the form, which is simple to understand
1+2(1+2)+1+2=0
Simplifying terms in parentheses
1+2*(+3)+1+2=0
Reorder the terms in parentheses
1+(+6)+1+2=0
Remove unnecessary parentheses
+1+6+1+2=0
We move all terms containing to the left and all other terms to the right.
0=0-1-6-1-2
We simplify left and right side of the equation.
0=-10
0=-10
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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