-3(a+9)=

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Solution for -3(a+9)= equation: 


Simplifying
-3(a + 9) = 0

Reorder the terms:
-3(9 + a) = 0
(9 * -3 + a * -3) = 0
(-27 + -3a) = 0

Solving
-27 + -3a = 0

Solving for variable 'a'.

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

Add '27' to each side of the equation.
-27 + 27 + -3a = 0 + 27

Combine like terms: -27 + 27 = 0
0 + -3a = 0 + 27
-3a = 0 + 27

Combine like terms: 0 + 27 = 27
-3a = 27

Divide each side by '-3'.
a = -9

Simplifying
a = -9

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