(10-k)9=-k

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Solution for (10-k)9=-k equation:


Simplifying
(10 + -1k) * 9 = -1k

Reorder the terms for easier multiplication:
9(10 + -1k) = -1k
(10 * 9 + -1k * 9) = -1k
(90 + -9k) = -1k

Solving
90 + -9k = -1k

Solving for variable 'k'.

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

Add 'k' to each side of the equation.
90 + -9k + k = -1k + k

Combine like terms: -9k + k = -8k
90 + -8k = -1k + k

Combine like terms: -1k + k = 0
90 + -8k = 0

Add '-90' to each side of the equation.
90 + -90 + -8k = 0 + -90

Combine like terms: 90 + -90 = 0
0 + -8k = 0 + -90
-8k = 0 + -90

Combine like terms: 0 + -90 = -90
-8k = -90

Divide each side by '-8'.
k = 11.25

Simplifying
k = 11.25

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