-(3x+9)=15

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Solution for -(3x+9)=15 equation: 


Simplifying
-1(3x + 9) = 15

Reorder the terms:
-1(9 + 3x) = 15
(9 * -1 + 3x * -1) = 15
(-9 + -3x) = 15

Solving
-9 + -3x = 15

Solving for variable 'x'.

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

Add '9' to each side of the equation.
-9 + 9 + -3x = 15 + 9

Combine like terms: -9 + 9 = 0
0 + -3x = 15 + 9
-3x = 15 + 9

Combine like terms: 15 + 9 = 24
-3x = 24

Divide each side by '-3'.
x = -8

Simplifying
x = -8

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