SOLUTION: 9k=10-k,-1 is this a solution of the equation
-> SOLUTION: 9k=10-k,-1 is this a solution of the equation
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9k=10-k,-1 is this a solution of the equation
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Substitute -1 in place of the k.
9k = 10 - k
9(-1) = 10 - (-1)
-9 = 10+1
Does it check? What do you think? Is it a solution???
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