12=-2-9-3z

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Solution for 12=-2-9-3z equation:


Simplifying
12 = -2 + -9 + -3z

Combine like terms: -2 + -9 = -11
12 = -11 + -3z

Solving
12 = -11 + -3z

Solving for variable 'z'.

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

Add '3z' to each side of the equation.
12 + 3z = -11 + -3z + 3z

Combine like terms: -3z + 3z = 0
12 + 3z = -11 + 0
12 + 3z = -11

Add '-12' to each side of the equation.
12 + -12 + 3z = -11 + -12

Combine like terms: 12 + -12 = 0
0 + 3z = -11 + -12
3z = -11 + -12

Combine like terms: -11 + -12 = -23
3z = -23

Divide each side by '3'.
z = -7.666666667

Simplifying
z = -7.666666667

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