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7(x-1)-9=3x+4(-5+x)
We simplify the equation to the form, which is simple to understand
7(x-1)-9=3x+4(-5+x)
Reorder the terms in parentheses
+(+7x-7)-9=3x+4*(-5+x)
Remove unnecessary parentheses
+7x-7-9=+3x+4+*(-5+x+)
Reorder the terms in parentheses
+7x-7-9=3x+(-20+4x)
Remove unnecessary parentheses
+7x-7-9=+3x-20+4x
We move all terms containing x to the left and all other terms to the right.
+7x-3x-4x=-20+7+9
We simplify left and right side of the equation.
0x=-4
0=-4
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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