9x+12+3x=4

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


Simplifying
9x + 12 + 3x = 4

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

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

Solving
12 + 12x = 4

Solving for variable 'x'.

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

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

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

Combine like terms: 4 + -12 = -8
12x = -8

Divide each side by '12'.
x = -0.6666666667

Simplifying
x = -0.6666666667

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