18-3z=15

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Solution for 18-3z=15 equation: 


Simplifying
18 + -3z = 15

Solving
18 + -3z = 15

Solving for variable 'z'.

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

Add '-18' to each side of the equation.
18 + -18 + -3z = 15 + -18

Combine like terms: 18 + -18 = 0
0 + -3z = 15 + -18
-3z = 15 + -18

Combine like terms: 15 + -18 = -3
-3z = -3

Divide each side by '-3'.
z = 1

Simplifying
z = 1

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