13r+7=-3-3r
13r + 7 = -3 - 3r
13r + 3r = -3 - 7;
16r = -10;
r = -10/16;
r = -5/8
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Asked 3/31/2016 2:48:14 PM
Updated 3/31/2016 3:58:51 PM
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Andrew. [3/31/2016 3:58:51 PM]
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