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-6n-3(5+4n)=-159
We move all terms to the left:
-6n-3(5+4n)-(-159)=0
We add all the numbers together, and all the variables
-6n-3(4n+5)-(-159)=0
We add all the numbers together, and all the variables
-6n-3(4n+5)+159=0
We multiply parentheses
-6n-12n-15+159=0
We add all the numbers together, and all the variables
-18n+144=0
We move all terms containing n to the left, all other terms to the right
-18n=-144
n=-144/-18
n=+8
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