-21x-3=-21x-3

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Solution for -21x-3=-21x-3 equation:


Simplifying
-21x + -3 = -21x + -3

Reorder the terms:
-3 + -21x = -21x + -3

Reorder the terms:
-3 + -21x = -3 + -21x

Add '3' to each side of the equation.
-3 + 3 + -21x = -3 + 3 + -21x

Combine like terms: -3 + 3 = 0
0 + -21x = -3 + 3 + -21x
-21x = -3 + 3 + -21x

Combine like terms: -3 + 3 = 0
-21x = 0 + -21x
-21x = -21x

Add '21x' to each side of the equation.
-21x + 21x = -21x + 21x

Combine like terms: -21x + 21x = 0
0 = -21x + 21x

Combine like terms: -21x + 21x = 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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