-7z-9=13

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Solution for -7z-9=13 equation: 


Simplifying
-7z + -9 = 13

Reorder the terms:
-9 + -7z = 13

Solving
-9 + -7z = 13

Solving for variable 'z'.

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

Add '9' to each side of the equation.
-9 + 9 + -7z = 13 + 9

Combine like terms: -9 + 9 = 0
0 + -7z = 13 + 9
-7z = 13 + 9

Combine like terms: 13 + 9 = 22
-7z = 22

Divide each side by '-7'.
z = -3.142857143

Simplifying
z = -3.142857143

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