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-248=-8n-4(7n-1)
We move all terms to the left:
-248-(-8n-4(7n-1))=0
We calculate terms in parentheses: -(-8n-4(7n-1)), so:We get rid of parentheses
-8n-4(7n-1)
We multiply parentheses
-8n-28n+4
We add all the numbers together, and all the variables
-36n+4
Back to the equation:
-(-36n+4)
36n-4-248=0
We add all the numbers together, and all the variables
36n-252=0
We move all terms containing n to the left, all other terms to the right
36n=252
n=252/36
n=7
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