18x+21=12x

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Solution for 18x+21=12x equation:


Simplifying
18x + 21 = 12x

Reorder the terms:
21 + 18x = 12x

Solving
21 + 18x = 12x

Solving for variable 'x'.

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

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

Combine like terms: 18x + -12x = 6x
21 + 6x = 12x + -12x

Combine like terms: 12x + -12x = 0
21 + 6x = 0

Add '-21' to each side of the equation.
21 + -21 + 6x = 0 + -21

Combine like terms: 21 + -21 = 0
0 + 6x = 0 + -21
6x = 0 + -21

Combine like terms: 0 + -21 = -21
6x = -21

Divide each side by '6'.
x = -3.5

Simplifying
x = -3.5

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