12=7-k

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Solution for 12=7-k equation:


Simplifying
12 = 7 + -1k

Solving
12 = 7 + -1k

Solving for variable 'k'.

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

Add 'k' to each side of the equation.
12 + k = 7 + -1k + k

Combine like terms: -1k + k = 0
12 + k = 7 + 0
12 + k = 7

Add '-12' to each side of the equation.
12 + -12 + k = 7 + -12

Combine like terms: 12 + -12 = 0
0 + k = 7 + -12
k = 7 + -12

Combine like terms: 7 + -12 = -5
k = -5

Simplifying
k = -5

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