z+15=18

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Solution for z+15=18 equation: 


Simplifying
z + 15 = 18

Reorder the terms:
15 + z = 18

Solving
15 + z = 18

Solving for variable 'z'.

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

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

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

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

Simplifying
z = 3

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