x+12+3x=18-x

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


Simplifying
x + 12 + 3x = 18 + -1x

Reorder the terms:
12 + x + 3x = 18 + -1x

Combine like terms: x + 3x = 4x
12 + 4x = 18 + -1x

Solving
12 + 4x = 18 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
12 + 4x + x = 18 + -1x + x

Combine like terms: 4x + x = 5x
12 + 5x = 18 + -1x + x

Combine like terms: -1x + x = 0
12 + 5x = 18 + 0
12 + 5x = 18

Add '-12' to each side of the equation.
12 + -12 + 5x = 18 + -12

Combine like terms: 12 + -12 = 0
0 + 5x = 18 + -12
5x = 18 + -12

Combine like terms: 18 + -12 = 6
5x = 6

Divide each side by '5'.
x = 1.2

Simplifying
x = 1.2

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