x+3x+4=16

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Solution for x+3x+4=16 equation: 


Simplifying
x + 3x + 4 = 16

Reorder the terms:
4 + x + 3x = 16

Combine like terms: x + 3x = 4x
4 + 4x = 16

Solving
4 + 4x = 16

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 = 16 + -4

Combine like terms: 4 + -4 = 0
0 + 4x = 16 + -4
4x = 16 + -4

Combine like terms: 16 + -4 = 12
4x = 12

Divide each side by '4'.
x = 3

Simplifying
x = 3

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