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DanAbdn · Answer 1 · 2017-11-12T09:49:17+0000

12 - 5(3r + 2) = 17 |use distributive property a(b + c) = ab + ac

12 - 15r - 10 = 17

2 - 15r = 17 |subtract 2 from both sides

-15r = 15 |divide both sides by (-15)

r = -1

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