-0.4k=40

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Solution for -0.4k=40 equation: 


Simplifying
-0.4k = 40

Solving
-0.4k = 40

Solving for variable 'k'.

Move all terms containing k to the left, all other terms to the right.

Divide each side by '-0.4'.
k = -100

Simplifying
k = -100

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