12-9+12=k

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Solution for 12-9+12=k equation:


Simplifying
12 + -9 + 12 = k

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

Combine like terms: 3 + 12 = 15
15 = k

Solving
15 = 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.
15 + -1k = k + -1k

Combine like terms: k + -1k = 0
15 + -1k = 0

Add '-15' to each side of the equation.
15 + -15 + -1k = 0 + -15

Combine like terms: 15 + -15 = 0
0 + -1k = 0 + -15
-1k = 0 + -15

Combine like terms: 0 + -15 = -15
-1k = -15

Divide each side by '-1'.
k = 15

Simplifying
k = 15

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