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28=4(-2n-5)
We move all terms to the left:
28-(4(-2n-5))=0
We calculate terms in parentheses: -(4(-2n-5)), so:We get rid of parentheses
4(-2n-5)
We multiply parentheses
-8n-20
Back to the equation:
-(-8n-20)
8n+20+28=0
We add all the numbers together, and all the variables
8n+48=0
We move all terms containing n to the left, all other terms to the right
8n=-48
n=-48/8
n=-6
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