You can put this solution on YOUR website! solve (r+6)/(5)=(r+8)/(7)
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Multiply both sides by 35 to get:
7(r+6) = 5(r+8)
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7r+42 = 5r+40
Subtract 5r from both sides.
Subtract 42 from both sides.
2r = -2
r = -1
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Cheers,
Stan H.