78+k+12=180

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Solution for 78+k+12=180 equation: 


Simplifying
78 + k + 12 = 180

Reorder the terms:
78 + 12 + k = 180

Combine like terms: 78 + 12 = 90
90 + k = 180

Solving
90 + k = 180

Solving for variable 'k'.

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

Add '-90' to each side of the equation.
90 + -90 + k = 180 + -90

Combine like terms: 90 + -90 = 0
0 + k = 180 + -90
k = 180 + -90

Combine like terms: 180 + -90 = 90
k = 90

Simplifying
k = 90

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