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-231=-4(1+8n)-3
We simplify the equation to the form, which is simple to understand
-231=-4(1+8n)-3
Reorder the terms in parentheses
-231=+(-4-32n)-3
Remove unnecessary parentheses
-231=-4-32n-3
We move all terms containing n to the left and all other terms to the right.
+32n=-4-3+231
We simplify left and right side of the equation.
+32n=+224
We divide both sides of the equation by 032 to get n.
n=7
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