9-z=-9

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Solution for 9-z=-9 equation:


Simplifying
9 + -1z = -9

Solving
9 + -1z = -9

Solving for variable 'z'.

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

Add '-9' to each side of the equation.
9 + -9 + -1z = -9 + -9

Combine like terms: 9 + -9 = 0
0 + -1z = -9 + -9
-1z = -9 + -9

Combine like terms: -9 + -9 = -18
-1z = -18

Divide each side by '-1'.
z = 18

Simplifying
z = 18

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