-10=(k-9)

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


Simplifying
-10 = (k + -9)

Reorder the terms:
-10 = (-9 + k)

Remove parenthesis around (-9 + k)
-10 = -9 + k

Solving
-10 = -9 + k

Solving for variable 'k'.

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

Add '-1k' to each side of the equation.
-10 + -1k = -9 + k + -1k

Combine like terms: k + -1k = 0
-10 + -1k = -9 + 0
-10 + -1k = -9

Add '10' to each side of the equation.
-10 + 10 + -1k = -9 + 10

Combine like terms: -10 + 10 = 0
0 + -1k = -9 + 10
-1k = -9 + 10

Combine like terms: -9 + 10 = 1
-1k = 1

Divide each side by '-1'.
k = -1

Simplifying
k = -1

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