3(z-4)=9

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Solution for 3(z-4)=9 equation: 


Simplifying
3(z + -4) = 9

Reorder the terms:
3(-4 + z) = 9
(-4 * 3 + z * 3) = 9
(-12 + 3z) = 9

Solving
-12 + 3z = 9

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 + 3z = 9 + 12

Combine like terms: -12 + 12 = 0
0 + 3z = 9 + 12
3z = 9 + 12

Combine like terms: 9 + 12 = 21
3z = 21

Divide each side by '3'.
z = 7

Simplifying
z = 7

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