8z-z=30-9

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Solution for 8z-z=30-9 equation: 


Simplifying
8z + -1z = 30 + -9

Combine like terms: 8z + -1z = 7z
7z = 30 + -9

Combine like terms: 30 + -9 = 21
7z = 21

Solving
7z = 21

Solving for variable 'z'.

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

Divide each side by '7'.
z = 3

Simplifying
z = 3

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