z+81=9-7

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Solution for z+81=9-7 equation: 


Simplifying
z + 81 = 9 + -7

Reorder the terms:
81 + z = 9 + -7

Combine like terms: 9 + -7 = 2
81 + z = 2

Solving
81 + z = 2

Solving for variable 'z'.

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

Add '-81' to each side of the equation.
81 + -81 + z = 2 + -81

Combine like terms: 81 + -81 = 0
0 + z = 2 + -81
z = 2 + -81

Combine like terms: 2 + -81 = -79
z = -79

Simplifying
z = -79

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