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162=-2n+4(8n+3)
We move all terms to the left:
162-(-2n+4(8n+3))=0
We calculate terms in parentheses: -(-2n+4(8n+3)), so:We get rid of parentheses
-2n+4(8n+3)
We multiply parentheses
-2n+32n+12
We add all the numbers together, and all the variables
30n+12
Back to the equation:
-(30n+12)
-30n-12+162=0
We add all the numbers together, and all the variables
-30n+150=0
We move all terms containing n to the left, all other terms to the right
-30n=-150
n=-150/-30
n=+5
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