-4(z-3)=-a

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Solution for -4(z-3)=-a equation: 


Simplifying
-4(z + -3) = -1a

Reorder the terms:
-4(-3 + z) = -1a
(-3 * -4 + z * -4) = -1a
(12 + -4z) = -1a

Solving
12 + -4z = -1a

Solving for variable 'z'.

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

Add '-12' to each side of the equation.
12 + -12 + -4z = -12 + -1a

Combine like terms: 12 + -12 = 0
0 + -4z = -12 + -1a
-4z = -12 + -1a

Divide each side by '-4'.
z = 3 + 0.25a

Simplifying
z = 3 + 0.25a

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