2z-15=30

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Solution for 2z-15=30 equation: 


Simplifying
2z + -15 = 30

Reorder the terms:
-15 + 2z = 30

Solving
-15 + 2z = 30

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 + 2z = 30 + 15

Combine like terms: -15 + 15 = 0
0 + 2z = 30 + 15
2z = 30 + 15

Combine like terms: 30 + 15 = 45
2z = 45

Divide each side by '2'.
z = 22.5

Simplifying
z = 22.5

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