-4-9x=-9x-4

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


Simplifying
-4 + -9x = -9x + -4

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

Add '4' to each side of the equation.
-4 + 4 + -9x = -4 + 4 + -9x

Combine like terms: -4 + 4 = 0
0 + -9x = -4 + 4 + -9x
-9x = -4 + 4 + -9x

Combine like terms: -4 + 4 = 0
-9x = 0 + -9x
-9x = -9x

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

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

Combine like terms: -9x + 9x = 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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