-3(1-z)=9

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Solution for -3(1-z)=9 equation: 


Simplifying
-3(1 + -1z) = 9
(1 * -3 + -1z * -3) = 9
(-3 + 3z) = 9

Solving
-3 + 3z = 9

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 + 3z = 9 + 3

Combine like terms: -3 + 3 = 0
0 + 3z = 9 + 3
3z = 9 + 3

Combine like terms: 9 + 3 = 12
3z = 12

Divide each side by '3'.
z = 4

Simplifying
z = 4

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