canalesc77
canalesc77
15-08-2017
Mathematics
contestada
-54 - 7r = -5(-2 - 5r)
Respuesta :
SMM11
SMM11
15-08-2017
-54-7r=10+25r
-7r-25r=10+54
-32r=64
r=64/-32
r=-2
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