12z-6-5z=15

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Solution for 12z-6-5z=15 equation:


Simplifying
12z + -6 + -5z = 15

Reorder the terms:
-6 + 12z + -5z = 15

Combine like terms: 12z + -5z = 7z
-6 + 7z = 15

Solving
-6 + 7z = 15

Solving for variable 'z'.

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

Add '6' to each side of the equation.
-6 + 6 + 7z = 15 + 6

Combine like terms: -6 + 6 = 0
0 + 7z = 15 + 6
7z = 15 + 6

Combine like terms: 15 + 6 = 21
7z = 21

Divide each side by '7'.
z = 3

Simplifying
z = 3

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