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-12x+12x-6+6=30
We simplify the equation to the form, which is simple to understand
-12x+12x-6+6=30
We move all terms containing x to the left and all other terms to the right.
-12x+12x=+30+6-6
We simplify left and right side of the equation.
0x=+30
0=30
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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