7x+9-9x=18-15x+13x-9

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Solution for 7x+9-9x=18-15x+13x-9 equation: 


Simplifying
7x + 9 + -9x = 18 + -15x + 13x + -9

Reorder the terms:
9 + 7x + -9x = 18 + -15x + 13x + -9

Combine like terms: 7x + -9x = -2x
9 + -2x = 18 + -15x + 13x + -9

Reorder the terms:
9 + -2x = 18 + -9 + -15x + 13x

Combine like terms: 18 + -9 = 9
9 + -2x = 9 + -15x + 13x

Combine like terms: -15x + 13x = -2x
9 + -2x = 9 + -2x

Add '-9' to each side of the equation.
9 + -9 + -2x = 9 + -9 + -2x

Combine like terms: 9 + -9 = 0
0 + -2x = 9 + -9 + -2x
-2x = 9 + -9 + -2x

Combine like terms: 9 + -9 = 0
-2x = 0 + -2x
-2x = -2x

Add '2x' to each side of the equation.
-2x + 2x = -2x + 2x

Combine like terms: -2x + 2x = 0
0 = -2x + 2x

Combine like terms: -2x + 2x = 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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