Solve for k. -9 - 9k = -27

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 - We subtract because we need to get the variable on one side and one number on each side of the equals. To do this you must do the opposite of what you see, (We have -9, so we do +9) on each side.

Equation at the end of Step 1:

 - We multiply because we need to get k alone with 1 number left over. To do this you do the opposite of what you see, (We have -9 and k being multiplied, we divide them by -9) on each side.

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