acoral2003 acoral2003

20-08-2016
Mathematics

contestada

-3(2r+7)=3 solve for r

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Sierrawhite2000 Sierrawhite2000

20-08-2016

-3(2r+7)=3
-6r + -42=3
+42 +42
-6r =45
Then all you do is divide

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Ckaranja Ckaranja

20-08-2016

-3(2r+7)=3
Opening the brackets;
-6r-21=3
-6r=3+21
-6r=24
r=-4

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