2z+6z-9=15

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Solution for 2z+6z-9=15 equation: 


Simplifying
2z + 6z + -9 = 15

Reorder the terms:
-9 + 2z + 6z = 15

Combine like terms: 2z + 6z = 8z
-9 + 8z = 15

Solving
-9 + 8z = 15

Solving for variable 'z'.

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

Add '9' to each side of the equation.
-9 + 9 + 8z = 15 + 9

Combine like terms: -9 + 9 = 0
0 + 8z = 15 + 9
8z = 15 + 9

Combine like terms: 15 + 9 = 24
8z = 24

Divide each side by '8'.
z = 3

Simplifying
z = 3

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