5x-9+-3x-12=5x

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Solution for 5x-9+-3x-12=5x equation:


Simplifying
5x + -9 + -3x + -12 = 5x

Reorder the terms:
-9 + -12 + 5x + -3x = 5x

Combine like terms: -9 + -12 = -21
-21 + 5x + -3x = 5x

Combine like terms: 5x + -3x = 2x
-21 + 2x = 5x

Solving
-21 + 2x = 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
-21 + 2x + -5x = 5x + -5x

Combine like terms: 2x + -5x = -3x
-21 + -3x = 5x + -5x

Combine like terms: 5x + -5x = 0
-21 + -3x = 0

Add '21' to each side of the equation.
-21 + 21 + -3x = 0 + 21

Combine like terms: -21 + 21 = 0
0 + -3x = 0 + 21
-3x = 0 + 21

Combine like terms: 0 + 21 = 21
-3x = 21

Divide each side by '-3'.
x = -7

Simplifying
x = -7

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