z-9=12+13

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Solution for z-9=12+13 equation: 


Simplifying
z + -9 = 12 + 13

Reorder the terms:
-9 + z = 12 + 13

Combine like terms: 12 + 13 = 25
-9 + z = 25

Solving
-9 + z = 25

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 + z = 25 + 9

Combine like terms: -9 + 9 = 0
0 + z = 25 + 9
z = 25 + 9

Combine like terms: 25 + 9 = 34
z = 34

Simplifying
z = 34

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