x+8+3x=12

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


Simplifying
x + 8 + 3x = 12

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

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

Solving
8 + 4x = 12

Solving for variable 'x'.

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

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

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

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

Divide each side by '4'.
x = 1

Simplifying
x = 1

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