3x-12=9x+4

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Solution for 3x-12=9x+4 equation:


Simplifying
3x + -12 = 9x + 4

Reorder the terms:
-12 + 3x = 9x + 4

Reorder the terms:
-12 + 3x = 4 + 9x

Solving
-12 + 3x = 4 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
-12 + 3x + -9x = 4 + 9x + -9x

Combine like terms: 3x + -9x = -6x
-12 + -6x = 4 + 9x + -9x

Combine like terms: 9x + -9x = 0
-12 + -6x = 4 + 0
-12 + -6x = 4

Add '12' to each side of the equation.
-12 + 12 + -6x = 4 + 12

Combine like terms: -12 + 12 = 0
0 + -6x = 4 + 12
-6x = 4 + 12

Combine like terms: 4 + 12 = 16
-6x = 16

Divide each side by '-6'.
x = -2.666666667

Simplifying
x = -2.666666667

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