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6(1+r)-8=-(r+2)
We move all terms to the left:
6(1+r)-8-(-(r+2))=0
We add all the numbers together, and all the variables
6(r+1)-(-(r+2))-8=0
We multiply parentheses
6r-(-(r+2))+6-8=0
We calculate terms in parentheses: -(-(r+2)), so:We add all the numbers together, and all the variables
-(r+2)
We get rid of parentheses
-r-2
We add all the numbers together, and all the variables
-1r-2
Back to the equation:
-(-1r-2)
6r-(-1r-2)-2=0
We get rid of parentheses
6r+1r+2-2=0
We add all the numbers together, and all the variables
7r=0
r=0/7
r=0
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