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12x+7=4(3x-2)
We simplify the equation to the form, which is simple to understand
12x+7=4(3x-2)
Reorder the terms in parentheses
12x+7=+(+12x-8)
Remove unnecessary parentheses
+12x+7=+12x-8
We move all terms containing x to the left and all other terms to the right.
+12x-12x=-8-7
We simplify left and right side of the equation.
0x=-15
0=-15
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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