19-08-2019
Mathematics

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-12=3k+9 solve for given variable

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Аноним Аноним

19-08-2019

-12=3k+9

move +9 to the other side

sign changes from +9 to -9.

-12-9= 3k+9-9

-12-9= 3k

-21= 3k

divide by 3

-21/3= 3k/3

k= -7

Answer: k= -7

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