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3.5(9.5r+7)=-26.5+8r
We move all terms to the left:
3.5(9.5r+7)-(-26.5+8r)=0
We add all the numbers together, and all the variables
3.5(9.5r+7)-(8r-26.5)=0
We multiply parentheses
31.5r-(8r-26.5)+24.5=0
We get rid of parentheses
31.5r-8r+26.5+24.5=0
We add all the numbers together, and all the variables
23.5r+51=0
We move all terms containing r to the left, all other terms to the right
23.5r=-51
r=-51/23.5
r=-2+4/23.5
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