-3x-9+15x=3(2x-4)

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Solution for -3x-9+15x=3(2x-4) equation:


Simplifying
-3x + -9 + 15x = 3(2x + -4)

Reorder the terms:
-9 + -3x + 15x = 3(2x + -4)

Combine like terms: -3x + 15x = 12x
-9 + 12x = 3(2x + -4)

Reorder the terms:
-9 + 12x = 3(-4 + 2x)
-9 + 12x = (-4 * 3 + 2x * 3)
-9 + 12x = (-12 + 6x)

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

Solving for variable 'x'.

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

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

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

Combine like terms: 6x + -6x = 0
-9 + 6x = -12 + 0
-9 + 6x = -12

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

Combine like terms: -9 + 9 = 0
0 + 6x = -12 + 9
6x = -12 + 9

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

Divide each side by '6'.
x = -0.5

Simplifying
x = -0.5

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