-9=z-18

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Solution for -9=z-18 equation:


Simplifying
-9 = z + -18

Reorder the terms:
-9 = -18 + z

Solving
-9 = -18 + z

Solving for variable 'z'.

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

Add '-1z' to each side of the equation.
-9 + -1z = -18 + z + -1z

Combine like terms: z + -1z = 0
-9 + -1z = -18 + 0
-9 + -1z = -18

Add '9' to each side of the equation.
-9 + 9 + -1z = -18 + 9

Combine like terms: -9 + 9 = 0
0 + -1z = -18 + 9
-1z = -18 + 9

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

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

Simplifying
z = 9

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