5z-z=21-9

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Solution for 5z-z=21-9 equation: 


Simplifying
5z + -1z = 21 + -9

Combine like terms: 5z + -1z = 4z
4z = 21 + -9

Combine like terms: 21 + -9 = 12
4z = 12

Solving
4z = 12

Solving for variable 'z'.

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

Divide each side by '4'.
z = 3

Simplifying
z = 3

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