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4r+4-8=-4(3-8r)+8(1-r)
We move all terms to the left:
4r+4-8-(-4(3-8r)+8(1-r))=0
We add all the numbers together, and all the variables
4r-(-4(-8r+3)+8(-1r+1))+4-8=0
We add all the numbers together, and all the variables
4r-(-4(-8r+3)+8(-1r+1))-4=0
We calculate terms in parentheses: -(-4(-8r+3)+8(-1r+1)), so:We get rid of parentheses
-4(-8r+3)+8(-1r+1)
We multiply parentheses
32r-8r-12+8
We add all the numbers together, and all the variables
24r-4
Back to the equation:
-(24r-4)
4r-24r+4-4=0
We add all the numbers together, and all the variables
-20r=0
r=0/-20
r=0
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