2z-6=-20

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Solution for 2z-6=-20 equation: 


Simplifying
2z + -6 = -20

Reorder the terms:
-6 + 2z = -20

Solving
-6 + 2z = -20

Solving for variable 'z'.

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

Add '6' to each side of the equation.
-6 + 6 + 2z = -20 + 6

Combine like terms: -6 + 6 = 0
0 + 2z = -20 + 6
2z = -20 + 6

Combine like terms: -20 + 6 = -14
2z = -14

Divide each side by '2'.
z = -7

Simplifying
z = -7

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