1-z=-8

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Solution for 1-z=-8 equation: 


Simplifying
1 + -1z = -8

Solving
1 + -1z = -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 + -1z = -8 + -1

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

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

Divide each side by '-1'.
z = 9

Simplifying
z = 9

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