SOLUTION: (3r-7)-(4r-15)=6

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Question 773772: (3r-7)-(4r-15)=6
Answer by Tatiana_Stebko(1539) About Me  (Show Source):
You can put this solution on YOUR website!
%283r-7%29-%284r-15%29=6+
3r-7-4r%2B15=6
-r%2B8=6 subtract 8 from both sides of the equation
+-r=6-8
-r=-2 divide by (-1)
r=2