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-6(7-4r)=25
We move all terms to the left:
-6(7-4r)-(25)=0
We add all the numbers together, and all the variables
-6(-4r+7)-25=0
We multiply parentheses
24r-42-25=0
We add all the numbers together, and all the variables
24r-67=0
We move all terms containing r to the left, all other terms to the right
24r=67
r=67/24
r=2+19/24
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