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-200=4(-1-7n)
We simplify the equation to the form, which is simple to understand
-200=4(-1-7n)
Reorder the terms in parentheses
-200=+(-4-28n)
Remove unnecessary parentheses
-200=-4-28n
We move all terms containing n to the left and all other terms to the right.
+28n=-4+200
We simplify left and right side of the equation.
+28n=+196
We divide both sides of the equation by 028 to get n.
n=7
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