x+3x=8x-4x

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Solution for x+3x=8x-4x equation: 


Simplifying
x + 3x = 8x + -4x

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

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

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

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

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

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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