2z+-3=-20

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Solution for 2z+-3=-20 equation: 


Simplifying
2z + -3 = -20

Reorder the terms:
-3 + 2z = -20

Solving
-3 + 2z = -20

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 + 2z = -20 + 3

Combine like terms: -3 + 3 = 0
0 + 2z = -20 + 3
2z = -20 + 3

Combine like terms: -20 + 3 = -17
2z = -17

Divide each side by '2'.
z = -8.5

Simplifying
z = -8.5

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