9-0.4k=1

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Solution for 9-0.4k=1 equation:


Simplifying
9 + -0.4k = 1

Solving
9 + -0.4k = 1

Solving for variable 'k'.

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

Add '-9' to each side of the equation.
9 + -9 + -0.4k = 1 + -9

Combine like terms: 9 + -9 = 0
0 + -0.4k = 1 + -9
-0.4k = 1 + -9

Combine like terms: 1 + -9 = -8
-0.4k = -8

Divide each side by '-0.4'.
k = 20

Simplifying
k = 20

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