18x-15=21+12x

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Solution for 18x-15=21+12x equation:


Simplifying
18x + -15 = 21 + 12x

Reorder the terms:
-15 + 18x = 21 + 12x

Solving
-15 + 18x = 21 + 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.
-15 + 18x + -12x = 21 + 12x + -12x

Combine like terms: 18x + -12x = 6x
-15 + 6x = 21 + 12x + -12x

Combine like terms: 12x + -12x = 0
-15 + 6x = 21 + 0
-15 + 6x = 21

Add '15' to each side of the equation.
-15 + 15 + 6x = 21 + 15

Combine like terms: -15 + 15 = 0
0 + 6x = 21 + 15
6x = 21 + 15

Combine like terms: 21 + 15 = 36
6x = 36

Divide each side by '6'.
x = 6

Simplifying
x = 6

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