-7z-7z=7z+9-9z

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


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

Combine like terms: -7z + -7z = -14z
-14z = 7z + 9 + -9z

Reorder the terms:
-14z = 9 + 7z + -9z

Combine like terms: 7z + -9z = -2z
-14z = 9 + -2z

Solving
-14z = 9 + -2z

Solving for variable 'z'.

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

Add '2z' to each side of the equation.
-14z + 2z = 9 + -2z + 2z

Combine like terms: -14z + 2z = -12z
-12z = 9 + -2z + 2z

Combine like terms: -2z + 2z = 0
-12z = 9 + 0
-12z = 9

Divide each side by '-12'.
z = -0.75

Simplifying
z = -0.75

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