40=-4k

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Solution for 40=-4k equation:


Simplifying
40 = -4k

Solving
40 = -4k

Solving for variable 'k'.

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

Add '4k' to each side of the equation.
40 + 4k = -4k + 4k

Combine like terms: -4k + 4k = 0
40 + 4k = 0

Add '-40' to each side of the equation.
40 + -40 + 4k = 0 + -40

Combine like terms: 40 + -40 = 0
0 + 4k = 0 + -40
4k = 0 + -40

Combine like terms: 0 + -40 = -40
4k = -40

Divide each side by '4'.
k = -10

Simplifying
k = -10

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