7-7z=9

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Solution for 7-7z=9 equation: 


Simplifying
7 + -7z = 9

Solving
7 + -7z = 9

Solving for variable 'z'.

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

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

Combine like terms: 7 + -7 = 0
0 + -7z = 9 + -7
-7z = 9 + -7

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

Divide each side by '-7'.
z = -0.2857142857

Simplifying
z = -0.2857142857

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