12=15+13z

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Solution for 12=15+13z equation:


Simplifying
12 = 15 + 13z

Solving
12 = 15 + 13z

Solving for variable 'z'.

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

Add '-13z' to each side of the equation.
12 + -13z = 15 + 13z + -13z

Combine like terms: 13z + -13z = 0
12 + -13z = 15 + 0
12 + -13z = 15

Add '-12' to each side of the equation.
12 + -12 + -13z = 15 + -12

Combine like terms: 12 + -12 = 0
0 + -13z = 15 + -12
-13z = 15 + -12

Combine like terms: 15 + -12 = 3
-13z = 3

Divide each side by '-13'.
z = -0.2307692308

Simplifying
z = -0.2307692308

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