x+4+3x=12

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Solution for x+4+3x=12 equation: 


Simplifying
x + 4 + 3x = 12

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

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

Solving
4 + 4x = 12

Solving for variable 'x'.

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

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

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

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

Divide each side by '4'.
x = 2

Simplifying
x = 2

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