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Mathematics 17 Online
OpenStudy (anonymous):

7k+12=8-9k

OpenStudy (anonymous):

7k+9k=8-12 16k=-4 k=-1/4

OpenStudy (anonymous):

Add 9k to the left side, subtract 12 from the right side: 7k+9k=8-12. So,16k=-4. Thus k=-1/4

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