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-10+6=2(3r-9)+8
We move all terms to the left:
-10+6-(2(3r-9)+8)=0
We add all the numbers together, and all the variables
-(2(3r-9)+8)-4=0
We calculate terms in parentheses: -(2(3r-9)+8), so:We get rid of parentheses
2(3r-9)+8
We multiply parentheses
6r-18+8
We add all the numbers together, and all the variables
6r-10
Back to the equation:
-(6r-10)
-6r+10-4=0
We add all the numbers together, and all the variables
-6r+6=0
We move all terms containing r to the left, all other terms to the right
-6r=-6
r=-6/-6
r=1
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