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-4(r+3)-(6-2r)=10
We move all terms to the left:
-4(r+3)-(6-2r)-(10)=0
We add all the numbers together, and all the variables
-4(r+3)-(-2r+6)-10=0
We multiply parentheses
-4r-(-2r+6)-12-10=0
We get rid of parentheses
-4r+2r-6-12-10=0
We add all the numbers together, and all the variables
-2r-28=0
We move all terms containing r to the left, all other terms to the right
-2r=28
r=28/-2
r=-14
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