2z-5=4

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Solution for 2z-5=4 equation: 


Simplifying
2z + -5 = 4

Reorder the terms:
-5 + 2z = 4

Solving
-5 + 2z = 4

Solving for variable 'z'.

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

Add '5' to each side of the equation.
-5 + 5 + 2z = 4 + 5

Combine like terms: -5 + 5 = 0
0 + 2z = 4 + 5
2z = 4 + 5

Combine like terms: 4 + 5 = 9
2z = 9

Divide each side by '2'.
z = 4.5

Simplifying
z = 4.5

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