-3x+9=-6+18

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Solution for -3x+9=-6+18 equation: 


Simplifying
-3x + 9 = -6 + 18

Reorder the terms:
9 + -3x = -6 + 18

Combine like terms: -6 + 18 = 12
9 + -3x = 12

Solving
9 + -3x = 12

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + -3x = 12 + -9

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

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

Divide each side by '-3'.
x = -1

Simplifying
x = -1

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