6z-3=21

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Solution for 6z-3=21 equation: 


Simplifying
6z + -3 = 21

Reorder the terms:
-3 + 6z = 21

Solving
-3 + 6z = 21

Solving for variable 'z'.

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

Add '3' to each side of the equation.
-3 + 3 + 6z = 21 + 3

Combine like terms: -3 + 3 = 0
0 + 6z = 21 + 3
6z = 21 + 3

Combine like terms: 21 + 3 = 24
6z = 24

Divide each side by '6'.
z = 4

Simplifying
z = 4

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