400=200-25K

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Solution for 400=200-25K equation: 


Simplifying
400 = 200 + -25K

Solving
400 = 200 + -25K

Solving for variable 'K'.

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

Add '25K' to each side of the equation.
400 + 25K = 200 + -25K + 25K

Combine like terms: -25K + 25K = 0
400 + 25K = 200 + 0
400 + 25K = 200

Add '-400' to each side of the equation.
400 + -400 + 25K = 200 + -400

Combine like terms: 400 + -400 = 0
0 + 25K = 200 + -400
25K = 200 + -400

Combine like terms: 200 + -400 = -200
25K = -200

Divide each side by '25'.
K = -8

Simplifying
K = -8

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