3+7=12-k

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Solution for 3+7=12-k equation:


Simplifying
3 + 7 = 12 + -1k

Combine like terms: 3 + 7 = 10
10 = 12 + -1k

Solving
10 = 12 + -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.
10 + k = 12 + -1k + k

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

Add '-10' to each side of the equation.
10 + -10 + k = 12 + -10

Combine like terms: 10 + -10 = 0
0 + k = 12 + -10
k = 12 + -10

Combine like terms: 12 + -10 = 2
k = 2

Simplifying
k = 2

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