9x+4=12x-9

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


Simplifying
9x + 4 = 12x + -9

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

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

Solving
4 + 9x = -9 + 12x

Solving for variable 'x'.

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

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

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

Combine like terms: 12x + -12x = 0
4 + -3x = -9 + 0
4 + -3x = -9

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

Combine like terms: 4 + -4 = 0
0 + -3x = -9 + -4
-3x = -9 + -4

Combine like terms: -9 + -4 = -13
-3x = -13

Divide each side by '-3'.
x = 4.333333333

Simplifying
x = 4.333333333

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