18x=21x-12

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Solution for 18x=21x-12 equation: 


Simplifying
18x = 21x + -12

Reorder the terms:
18x = -12 + 21x

Solving
18x = -12 + 21x

Solving for variable 'x'.

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

Add '-21x' to each side of the equation.
18x + -21x = -12 + 21x + -21x

Combine like terms: 18x + -21x = -3x
-3x = -12 + 21x + -21x

Combine like terms: 21x + -21x = 0
-3x = -12 + 0
-3x = -12

Divide each side by '-3'.
x = 4

Simplifying
x = 4

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