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-7(x+7)+113=2x-9(x-4)
We simplify the equation to the form, which is simple to understand
-7(x+7)+113=2x-9(x-4)
Reorder the terms in parentheses
+(-7x-49)+113=2x-9*(x-4)
Remove unnecessary parentheses
-7x-49+113=+2x-9+*(+x-4+)
Reorder the terms in parentheses
-7x-49+113=2x+(-9x+36)
Remove unnecessary parentheses
-7x-49+113=+2x-9x+36
We move all terms containing x to the left and all other terms to the right.
-7x-2x+9x=+36+49-113
We simplify left and right side of the equation.
0x=-28
0=-28
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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