12x-4=9x+5

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


Simplifying
12x + -4 = 9x + 5

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

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

Solving
-4 + 12x = 5 + 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.
-4 + 12x + -9x = 5 + 9x + -9x

Combine like terms: 12x + -9x = 3x
-4 + 3x = 5 + 9x + -9x

Combine like terms: 9x + -9x = 0
-4 + 3x = 5 + 0
-4 + 3x = 5

Add '4' to each side of the equation.
-4 + 4 + 3x = 5 + 4

Combine like terms: -4 + 4 = 0
0 + 3x = 5 + 4
3x = 5 + 4

Combine like terms: 5 + 4 = 9
3x = 9

Divide each side by '3'.
x = 3

Simplifying
x = 3

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