-10=2(k-9)

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Solution for -10=2(k-9) equation:


Simplifying
-10 = 2(k + -9)

Reorder the terms:
-10 = 2(-9 + k)
-10 = (-9 * 2 + k * 2)
-10 = (-18 + 2k)

Solving
-10 = -18 + 2k

Solving for variable 'k'.

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

Add '-2k' to each side of the equation.
-10 + -2k = -18 + 2k + -2k

Combine like terms: 2k + -2k = 0
-10 + -2k = -18 + 0
-10 + -2k = -18

Add '10' to each side of the equation.
-10 + 10 + -2k = -18 + 10

Combine like terms: -10 + 10 = 0
0 + -2k = -18 + 10
-2k = -18 + 10

Combine like terms: -18 + 10 = -8
-2k = -8

Divide each side by '-2'.
k = 4

Simplifying
k = 4

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