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OpenStudy (anonymous):
-2(r+8)=-21
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OpenStudy (eric_d):
expand left hand side @dylan_acosta13
OpenStudy (midhun.madhu1987):
Open the brackets my multiplying each term by -2.
OpenStudy (eric_d):
|dw:1408718402082:dw| like this
OpenStudy (eric_d):
@dylan_acosta13
OpenStudy (anonymous):
Have you heard of the distributive property? All you have to do is multiply what is in the parenthesis by -2 (what midhun.madhu1987 said, basically). Then solve for r.
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