6z-9z=21

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Solution for 6z-9z=21 equation: 


Simplifying
6z + -9z = 21

Combine like terms: 6z + -9z = -3z
-3z = 21

Solving
-3z = 21

Solving for variable 'z'.

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

Divide each side by '-3'.
z = -7

Simplifying
z = -7

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