issxalyse issxalyse

30-09-2017
Mathematics

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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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