2z-9z=-9-7-9z

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Solution for 2z-9z=-9-7-9z equation: 


Simplifying
2z + -9z = -9 + -7 + -9z

Combine like terms: 2z + -9z = -7z
-7z = -9 + -7 + -9z

Combine like terms: -9 + -7 = -16
-7z = -16 + -9z

Solving
-7z = -16 + -9z

Solving for variable 'z'.

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

Add '9z' to each side of the equation.
-7z + 9z = -16 + -9z + 9z

Combine like terms: -7z + 9z = 2z
2z = -16 + -9z + 9z

Combine like terms: -9z + 9z = 0
2z = -16 + 0
2z = -16

Divide each side by '2'.
z = -8

Simplifying
z = -8

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