z-1=8

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Solution for z-1=8 equation: 


Simplifying
z + -1 = 8

Reorder the terms:
-1 + z = 8

Solving
-1 + z = 8

Solving for variable 'z'.

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

Add '1' to each side of the equation.
-1 + 1 + z = 8 + 1

Combine like terms: -1 + 1 = 0
0 + z = 8 + 1
z = 8 + 1

Combine like terms: 8 + 1 = 9
z = 9

Simplifying
z = 9

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