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-77=7(x-4)
We simplify the equation to the form, which is simple to understand
-77=7(x-4)
Reorder the terms in parentheses
-77=+(+7x-28)
Remove unnecessary parentheses
-77=+7x-28
We move all terms containing x to the left and all other terms to the right.
-7x=-28+77
We simplify left and right side of the equation.
-7x=+49
We divide both sides of the equation by -07 to get x.
x=-7
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