15-9=12x-7x-3x

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Solution for 15-9=12x-7x-3x equation:


Simplifying
15 + -9 = 12x + -7x + -3x

Combine like terms: 15 + -9 = 6
6 = 12x + -7x + -3x

Combine like terms: 12x + -7x = 5x
6 = 5x + -3x

Combine like terms: 5x + -3x = 2x
6 = 2x

Solving
6 = 2x

Solving for variable 'x'.

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

Add '-2x' to each side of the equation.
6 + -2x = 2x + -2x

Combine like terms: 2x + -2x = 0
6 + -2x = 0

Add '-6' to each side of the equation.
6 + -6 + -2x = 0 + -6

Combine like terms: 6 + -6 = 0
0 + -2x = 0 + -6
-2x = 0 + -6

Combine like terms: 0 + -6 = -6
-2x = -6

Divide each side by '-2'.
x = 3

Simplifying
x = 3

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