13z-9=6z+12

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Solution for 13z-9=6z+12 equation:


Simplifying
13z + -9 = 6z + 12

Reorder the terms:
-9 + 13z = 6z + 12

Reorder the terms:
-9 + 13z = 12 + 6z

Solving
-9 + 13z = 12 + 6z

Solving for variable 'z'.

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

Add '-6z' to each side of the equation.
-9 + 13z + -6z = 12 + 6z + -6z

Combine like terms: 13z + -6z = 7z
-9 + 7z = 12 + 6z + -6z

Combine like terms: 6z + -6z = 0
-9 + 7z = 12 + 0
-9 + 7z = 12

Add '9' to each side of the equation.
-9 + 9 + 7z = 12 + 9

Combine like terms: -9 + 9 = 0
0 + 7z = 12 + 9
7z = 12 + 9

Combine like terms: 12 + 9 = 21
7z = 21

Divide each side by '7'.
z = 3

Simplifying
z = 3

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