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-n+15=-4(1+5n)
We move all terms to the left:
-n+15-(-4(1+5n))=0
We add all the numbers together, and all the variables
-n-(-4(5n+1))+15=0
We add all the numbers together, and all the variables
-1n-(-4(5n+1))+15=0
We calculate terms in parentheses: -(-4(5n+1)), so:We get rid of parentheses
-4(5n+1)
We multiply parentheses
-20n-4
Back to the equation:
-(-20n-4)
-1n+20n+4+15=0
We add all the numbers together, and all the variables
19n+19=0
We move all terms containing n to the left, all other terms to the right
19n=-19
n=-19/19
n=-1
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