x-8=3x+x+12

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Solution for x-8=3x+x+12 equation:


Simplifying
x + -8 = 3x + x + 12

Reorder the terms:
-8 + x = 3x + x + 12

Reorder the terms:
-8 + x = 12 + 3x + x

Combine like terms: 3x + x = 4x
-8 + x = 12 + 4x

Solving
-8 + x = 12 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
-8 + x + -4x = 12 + 4x + -4x

Combine like terms: x + -4x = -3x
-8 + -3x = 12 + 4x + -4x

Combine like terms: 4x + -4x = 0
-8 + -3x = 12 + 0
-8 + -3x = 12

Add '8' to each side of the equation.
-8 + 8 + -3x = 12 + 8

Combine like terms: -8 + 8 = 0
0 + -3x = 12 + 8
-3x = 12 + 8

Combine like terms: 12 + 8 = 20
-3x = 20

Divide each side by '-3'.
x = -6.666666667

Simplifying
x = -6.666666667

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