8-4z=20

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Solution for 8-4z=20 equation: 


Simplifying
8 + -4z = 20

Solving
8 + -4z = 20

Solving for variable 'z'.

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

Add '-8' to each side of the equation.
8 + -8 + -4z = 20 + -8

Combine like terms: 8 + -8 = 0
0 + -4z = 20 + -8
-4z = 20 + -8

Combine like terms: 20 + -8 = 12
-4z = 12

Divide each side by '-4'.
z = -3

Simplifying
z = -3

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