6x+9-9x=13-18x+15x-4

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Solution for 6x+9-9x=13-18x+15x-4 equation: 


Simplifying
6x + 9 + -9x = 13 + -18x + 15x + -4

Reorder the terms:
9 + 6x + -9x = 13 + -18x + 15x + -4

Combine like terms: 6x + -9x = -3x
9 + -3x = 13 + -18x + 15x + -4

Reorder the terms:
9 + -3x = 13 + -4 + -18x + 15x

Combine like terms: 13 + -4 = 9
9 + -3x = 9 + -18x + 15x

Combine like terms: -18x + 15x = -3x
9 + -3x = 9 + -3x

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

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

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

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

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

Combine like terms: -3x + 3x = 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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