3x-9=4x-x

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Solution for 3x-9=4x-x equation: 


Simplifying
3x + -9 = 4x + -1x

Reorder the terms:
-9 + 3x = 4x + -1x

Combine like terms: 4x + -1x = 3x
-9 + 3x = 3x

Add '-3x' to each side of the equation.
-9 + 3x + -3x = 3x + -3x

Combine like terms: 3x + -3x = 0
-9 + 0 = 3x + -3x
-9 = 3x + -3x

Combine like terms: 3x + -3x = 0
-9 = 0

Solving
-9 = 0

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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