3x-18=x+12

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Solution for 3x-18=x+12 equation:


Simplifying
3x + -18 = x + 12

Reorder the terms:
-18 + 3x = x + 12

Reorder the terms:
-18 + 3x = 12 + x

Solving
-18 + 3x = 12 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
-18 + 3x + -1x = 12 + x + -1x

Combine like terms: 3x + -1x = 2x
-18 + 2x = 12 + x + -1x

Combine like terms: x + -1x = 0
-18 + 2x = 12 + 0
-18 + 2x = 12

Add '18' to each side of the equation.
-18 + 18 + 2x = 12 + 18

Combine like terms: -18 + 18 = 0
0 + 2x = 12 + 18
2x = 12 + 18

Combine like terms: 12 + 18 = 30
2x = 30

Divide each side by '2'.
x = 15

Simplifying
x = 15

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