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-65=4x-5(-x+4)
We simplify the equation to the form, which is simple to understand
-65=4x-5(-x+4)
Reorder the terms in parentheses
-65=4x+(+5x-20)
Remove unnecessary parentheses
-65=+4x+5x-20
We move all terms containing x to the left and all other terms to the right.
-4x-5x=-20+65
We simplify left and right side of the equation.
-9x=+45
We divide both sides of the equation by -9 to get x.
x=-5
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