-(a-9)=0

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Solution for -(a-9)=0 equation: 


Simplifying
-1(a + -9) = 0

Reorder the terms:
-1(-9 + a) = 0
(-9 * -1 + a * -1) = 0
(9 + -1a) = 0

Solving
9 + -1a = 0

Solving for variable 'a'.

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

Add '-9' to each side of the equation.
9 + -9 + -1a = 0 + -9

Combine like terms: 9 + -9 = 0
0 + -1a = 0 + -9
-1a = 0 + -9

Combine like terms: 0 + -9 = -9
-1a = -9

Divide each side by '-1'.
a = 9

Simplifying
a = 9

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