-12=3(k+-1)

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Solution for -12=3(k+-1) equation:


Simplifying
-12 = 3(k + -1)

Reorder the terms:
-12 = 3(-1 + k)
-12 = (-1 * 3 + k * 3)
-12 = (-3 + 3k)

Solving
-12 = -3 + 3k

Solving for variable 'k'.

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

Add '-3k' to each side of the equation.
-12 + -3k = -3 + 3k + -3k

Combine like terms: 3k + -3k = 0
-12 + -3k = -3 + 0
-12 + -3k = -3

Add '12' to each side of the equation.
-12 + 12 + -3k = -3 + 12

Combine like terms: -12 + 12 = 0
0 + -3k = -3 + 12
-3k = -3 + 12

Combine like terms: -3 + 12 = 9
-3k = 9

Divide each side by '-3'.
k = -3

Simplifying
k = -3

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