issxalyse
issxalyse
30-09-2017
Mathematics
contestada
How to solve-3r+9=-4r+5
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allycat223445
allycat223445
30-09-2017
subtract 5 from both sides then you get -3r+9=-4r then add 3r to both sides then you get 9=-1r then divide both sides by -1 and you get r=-9
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