3(2z-4)+9=15

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Solution for 3(2z-4)+9=15 equation:


Simplifying
3(2z + -4) + 9 = 15

Reorder the terms:
3(-4 + 2z) + 9 = 15
(-4 * 3 + 2z * 3) + 9 = 15
(-12 + 6z) + 9 = 15

Reorder the terms:
-12 + 9 + 6z = 15

Combine like terms: -12 + 9 = -3
-3 + 6z = 15

Solving
-3 + 6z = 15

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 + 6z = 15 + 3

Combine like terms: -3 + 3 = 0
0 + 6z = 15 + 3
6z = 15 + 3

Combine like terms: 15 + 3 = 18
6z = 18

Divide each side by '6'.
z = 3

Simplifying
z = 3

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