9-9(9z+9)=9

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Solution for 9-9(9z+9)=9 equation:


Simplifying
9 + -9(9z + 9) = 9

Reorder the terms:
9 + -9(9 + 9z) = 9
9 + (9 * -9 + 9z * -9) = 9
9 + (-81 + -81z) = 9

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

Solving
-72 + -81z = 9

Solving for variable 'z'.

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

Add '72' to each side of the equation.
-72 + 72 + -81z = 9 + 72

Combine like terms: -72 + 72 = 0
0 + -81z = 9 + 72
-81z = 9 + 72

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

Divide each side by '-81'.
z = -1

Simplifying
z = -1

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