9x-(3x+9)=3x-12

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Solution for 9x-(3x+9)=3x-12 equation:


Simplifying
9x + -1(3x + 9) = 3x + -12

Reorder the terms:
9x + -1(9 + 3x) = 3x + -12
9x + (9 * -1 + 3x * -1) = 3x + -12
9x + (-9 + -3x) = 3x + -12

Reorder the terms:
-9 + 9x + -3x = 3x + -12

Combine like terms: 9x + -3x = 6x
-9 + 6x = 3x + -12

Reorder the terms:
-9 + 6x = -12 + 3x

Solving
-9 + 6x = -12 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
-9 + 6x + -3x = -12 + 3x + -3x

Combine like terms: 6x + -3x = 3x
-9 + 3x = -12 + 3x + -3x

Combine like terms: 3x + -3x = 0
-9 + 3x = -12 + 0
-9 + 3x = -12

Add '9' to each side of the equation.
-9 + 9 + 3x = -12 + 9

Combine like terms: -9 + 9 = 0
0 + 3x = -12 + 9
3x = -12 + 9

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

Divide each side by '3'.
x = -1

Simplifying
x = -1

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