80-z=69

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Solution for 80-z=69 equation: 


Simplifying
80 + -1z = 69

Solving
80 + -1z = 69

Solving for variable 'z'.

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

Add '-80' to each side of the equation.
80 + -80 + -1z = 69 + -80

Combine like terms: 80 + -80 = 0
0 + -1z = 69 + -80
-1z = 69 + -80

Combine like terms: 69 + -80 = -11
-1z = -11

Divide each side by '-1'.
z = 11

Simplifying
z = 11

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