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-25+5n=2(1-2n)
We move all terms to the left:
-25+5n-(2(1-2n))=0
We add all the numbers together, and all the variables
5n-(2(-2n+1))-25=0
We calculate terms in parentheses: -(2(-2n+1)), so:We get rid of parentheses
2(-2n+1)
We multiply parentheses
-4n+2
Back to the equation:
-(-4n+2)
5n+4n-2-25=0
We add all the numbers together, and all the variables
9n-27=0
We move all terms containing n to the left, all other terms to the right
9n=27
n=27/9
n=3
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