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-9(n+4)=-5n-4(4n+36)
We move all terms to the left:
-9(n+4)-(-5n-4(4n+36))=0
We multiply parentheses
-9n-(-5n-4(4n+36))-36=0
We calculate terms in parentheses: -(-5n-4(4n+36)), so:We get rid of parentheses
-5n-4(4n+36)
We multiply parentheses
-5n-16n-144
We add all the numbers together, and all the variables
-21n-144
Back to the equation:
-(-21n-144)
-9n+21n+144-36=0
We add all the numbers together, and all the variables
12n+108=0
We move all terms containing n to the left, all other terms to the right
12n=-108
n=-108/12
n=-9
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