-9(a+1)=

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Solution for -9(a+1)= equation: 


Simplifying
-9(a + 1) = 0

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

Solving
-9 + -9a = 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 + -9a = 0 + 9

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

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

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

Simplifying
a = -1

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