Respuesta :

mstott
the Answer is 
 
1.08=-20.7>r=-20.7/1.8=
-11.5
The Answer is -11.5

Please star this
1.8r + 9= -5.7r-6
+5.7r -9      +5.7r -9

7.5r =-15 (divde by 7.5)

r=-2
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