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-4(8+5n)=7
We move all terms to the left:
-4(8+5n)-(7)=0
We add all the numbers together, and all the variables
-4(5n+8)-7=0
We multiply parentheses
-20n-32-7=0
We add all the numbers together, and all the variables
-20n-39=0
We move all terms containing n to the left, all other terms to the right
-20n=39
n=39/-20
n=-1+19/20
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