5x+12-9=0

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Solution for 5x+12-9=0 equation: 


Simplifying
5x + 12 + -9 = 0

Reorder the terms:
12 + -9 + 5x = 0

Combine like terms: 12 + -9 = 3
3 + 5x = 0

Solving
3 + 5x = 0

Solving for variable 'x'.

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

Add '-3' to each side of the equation.
3 + -3 + 5x = 0 + -3

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

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

Divide each side by '5'.
x = -0.6

Simplifying
x = -0.6

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