8(1-4z)=-20

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Solution for 8(1-4z)=-20 equation: 


Simplifying
8(1 + -4z) = -20
(1 * 8 + -4z * 8) = -20
(8 + -32z) = -20

Solving
8 + -32z = -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 + -32z = -20 + -8

Combine like terms: 8 + -8 = 0
0 + -32z = -20 + -8
-32z = -20 + -8

Combine like terms: -20 + -8 = -28
-32z = -28

Divide each side by '-32'.
z = 0.875

Simplifying
z = 0.875

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