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-7(2x+9)=-14x+63
We simplify the equation to the form, which is simple to understand
-7(2x+9)=-14x+63
Reorder the terms in parentheses
+(-14x-63)=-14x+63
Remove unnecessary parentheses
-14x-63=-14x+63
We move all terms containing x to the left and all other terms to the right.
-14x+14x=+63+63
We simplify left and right side of the equation.
0x=+126
0=126
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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