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13=-6n+4(2n+3)
We move all terms to the left:
13-(-6n+4(2n+3))=0
We calculate terms in parentheses: -(-6n+4(2n+3)), so:We get rid of parentheses
-6n+4(2n+3)
We multiply parentheses
-6n+8n+12
We add all the numbers together, and all the variables
2n+12
Back to the equation:
-(2n+12)
-2n-12+13=0
We add all the numbers together, and all the variables
-2n+1=0
We move all terms containing n to the left, all other terms to the right
-2n=-1
n=-1/-2
n=1/2
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