x+3x=7x

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Solution for x+3x=7x equation: 


Simplifying
x + 3x = 7x

Combine like terms: x + 3x = 4x
4x = 7x

Solving
4x = 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
4x + -7x = 7x + -7x

Combine like terms: 4x + -7x = -3x
-3x = 7x + -7x

Combine like terms: 7x + -7x = 0
-3x = 0

Divide each side by '-3'.
x = 0

Simplifying
x = 0

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