12=9x+4-5x

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Solution for 12=9x+4-5x equation: 


Simplifying
12 = 9x + 4 + -5x

Reorder the terms:
12 = 4 + 9x + -5x

Combine like terms: 9x + -5x = 4x
12 = 4 + 4x

Solving
12 = 4 + 4x

Solving for variable 'x'.

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

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

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

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

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

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

Divide each side by '-4'.
x = 2

Simplifying
x = 2

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