3(3+k)=-12

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


Simplifying
3(3 + k) = -12
(3 * 3 + k * 3) = -12
(9 + 3k) = -12

Solving
9 + 3k = -12

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 + 3k = -12 + -9

Combine like terms: 9 + -9 = 0
0 + 3k = -12 + -9
3k = -12 + -9

Combine like terms: -12 + -9 = -21
3k = -21

Divide each side by '3'.
k = -7

Simplifying
k = -7

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