2z=12-18

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Solution for 2z=12-18 equation: 


Simplifying
2z = 12 + -18

Combine like terms: 12 + -18 = -6
2z = -6

Solving
2z = -6

Solving for variable 'z'.

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

Divide each side by '2'.
z = -3

Simplifying
z = -3

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