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6-2(4r+1)=3r-2(2r+5)
We move all terms to the left:
6-2(4r+1)-(3r-2(2r+5))=0
We multiply parentheses
-8r-(3r-2(2r+5))-2+6=0
We calculate terms in parentheses: -(3r-2(2r+5)), so:We add all the numbers together, and all the variables
3r-2(2r+5)
We multiply parentheses
3r-4r-10
We add all the numbers together, and all the variables
-1r-10
Back to the equation:
-(-1r-10)
-8r-(-1r-10)+4=0
We get rid of parentheses
-8r+1r+10+4=0
We add all the numbers together, and all the variables
-7r+14=0
We move all terms containing r to the left, all other terms to the right
-7r=-14
r=-14/-7
r=+2
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