What is -30+k=9

To solve the equation -30 + k = 9, you need to isolate the variable k on one side of the equation. Here's how you can do it:

Step 1: Start with the equation -30 + k = 9.

Step 2: To isolate the variable k, you need to get rid of the constant -30. Since -30 is being added to k, you can undo this by subtracting -30 from both sides of the equation.

-30 + k - (-30) = 9 - (-30)

Simplifying both sides, you get:
k = 9 + 30

Step 3: Adding 9 and 30, you get:
k = 39

Therefore, the solution to the equation -30 + k = 9 is k = 39.