9-12z+8z=-13-5z+4z

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Solution for 9-12z+8z=-13-5z+4z equation: 


Simplifying
9 + -12z + 8z = -13 + -5z + 4z

Combine like terms: -12z + 8z = -4z
9 + -4z = -13 + -5z + 4z

Combine like terms: -5z + 4z = -1z
9 + -4z = -13 + -1z

Solving
9 + -4z = -13 + -1z

Solving for variable 'z'.

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

Add 'z' to each side of the equation.
9 + -4z + z = -13 + -1z + z

Combine like terms: -4z + z = -3z
9 + -3z = -13 + -1z + z

Combine like terms: -1z + z = 0
9 + -3z = -13 + 0
9 + -3z = -13

Add '-9' to each side of the equation.
9 + -9 + -3z = -13 + -9

Combine like terms: 9 + -9 = 0
0 + -3z = -13 + -9
-3z = -13 + -9

Combine like terms: -13 + -9 = -22
-3z = -22

Divide each side by '-3'.
z = 7.333333333

Simplifying
z = 7.333333333

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