-2z-9=72

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Solution for -2z-9=72 equation:


Simplifying
-2z + -9 = 72

Reorder the terms:
-9 + -2z = 72

Solving
-9 + -2z = 72

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 + -2z = 72 + 9

Combine like terms: -9 + 9 = 0
0 + -2z = 72 + 9
-2z = 72 + 9

Combine like terms: 72 + 9 = 81
-2z = 81

Divide each side by '-2'.
z = -40.5

Simplifying
z = -40.5

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