12-3x+15=-9

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Solution for 12-3x+15=-9 equation: 


Simplifying
12 + -3x + 15 = -9

Reorder the terms:
12 + 15 + -3x = -9

Combine like terms: 12 + 15 = 27
27 + -3x = -9

Solving
27 + -3x = -9

Solving for variable 'x'.

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

Add '-27' to each side of the equation.
27 + -27 + -3x = -9 + -27

Combine like terms: 27 + -27 = 0
0 + -3x = -9 + -27
-3x = -9 + -27

Combine like terms: -9 + -27 = -36
-3x = -36

Divide each side by '-3'.
x = 12

Simplifying
x = 12

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