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