x+3x+x=30

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Solution for x+3x+x=30 equation: 


Simplifying
x + 3x + x = 30

Combine like terms: x + 3x = 4x
4x + x = 30

Combine like terms: 4x + x = 5x
5x = 30

Solving
5x = 30

Solving for variable 'x'.

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

Divide each side by '5'.
x = 6

Simplifying
x = 6

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