2z=15-9

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Solution for 2z=15-9 equation: 


Simplifying
2z = 15 + -9

Combine like terms: 15 + -9 = 6
2z = 6

Solving
2z = 6

Solving for variable 'z'.

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

Divide each side by '2'.
z = 3

Simplifying
z = 3

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