x+12+3x=18-2x

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Solution for x+12+3x=18-2x equation: 


Simplifying
x + 12 + 3x = 18 + -2x

Reorder the terms:
12 + x + 3x = 18 + -2x

Combine like terms: x + 3x = 4x
12 + 4x = 18 + -2x

Solving
12 + 4x = 18 + -2x

Solving for variable 'x'.

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

Add '2x' to each side of the equation.
12 + 4x + 2x = 18 + -2x + 2x

Combine like terms: 4x + 2x = 6x
12 + 6x = 18 + -2x + 2x

Combine like terms: -2x + 2x = 0
12 + 6x = 18 + 0
12 + 6x = 18

Add '-12' to each side of the equation.
12 + -12 + 6x = 18 + -12

Combine like terms: 12 + -12 = 0
0 + 6x = 18 + -12
6x = 18 + -12

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

Divide each side by '6'.
x = 1

Simplifying
x = 1

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