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-6n-20=-2n+2n+4(1-3n)
We move all terms to the left:
-6n-20-(-2n+2n+4(1-3n))=0
We add all the numbers together, and all the variables
-6n-(-2n+2n+4(-3n+1))-20=0
We calculate terms in parentheses: -(-2n+2n+4(-3n+1)), so:We get rid of parentheses
-2n+2n+4(-3n+1)
We add all the numbers together, and all the variables
4(-3n+1)
We multiply parentheses
-12n+4
Back to the equation:
-(-12n+4)
-6n+12n-4-20=0
We add all the numbers together, and all the variables
6n-24=0
We move all terms containing n to the left, all other terms to the right
6n=24
n=24/6
n=4
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