5-3x-12=x+9

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


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

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

Combine like terms: 5 + -12 = -7
-7 + -3x = x + 9

Reorder the terms:
-7 + -3x = 9 + x

Solving
-7 + -3x = 9 + 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.
-7 + -3x + -1x = 9 + x + -1x

Combine like terms: -3x + -1x = -4x
-7 + -4x = 9 + x + -1x

Combine like terms: x + -1x = 0
-7 + -4x = 9 + 0
-7 + -4x = 9

Add '7' to each side of the equation.
-7 + 7 + -4x = 9 + 7

Combine like terms: -7 + 7 = 0
0 + -4x = 9 + 7
-4x = 9 + 7

Combine like terms: 9 + 7 = 16
-4x = 16

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

Simplifying
x = -4

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