-3x-9=(x+3)

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


Simplifying
-3x + -9 = (x + 3)

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

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

Remove parenthesis around (3 + x)
-9 + -3x = 3 + x

Solving
-9 + -3x = 3 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
-9 + -3x + -1x = 3 + x + -1x

Combine like terms: -3x + -1x = -4x
-9 + -4x = 3 + x + -1x

Combine like terms: x + -1x = 0
-9 + -4x = 3 + 0
-9 + -4x = 3

Add '9' to each side of the equation.
-9 + 9 + -4x = 3 + 9

Combine like terms: -9 + 9 = 0
0 + -4x = 3 + 9
-4x = 3 + 9

Combine like terms: 3 + 9 = 12
-4x = 12

Divide each side by '-4'.
x = -3

Simplifying
x = -3

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