13x-21=4(2x-4)+5x-5

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Solution for 13x-21=4(2x-4)+5x-5 equation:


Simplifying
13x + -21 = 4(2x + -4) + 5x + -5

Reorder the terms:
-21 + 13x = 4(2x + -4) + 5x + -5

Reorder the terms:
-21 + 13x = 4(-4 + 2x) + 5x + -5
-21 + 13x = (-4 * 4 + 2x * 4) + 5x + -5
-21 + 13x = (-16 + 8x) + 5x + -5

Reorder the terms:
-21 + 13x = -16 + -5 + 8x + 5x

Combine like terms: -16 + -5 = -21
-21 + 13x = -21 + 8x + 5x

Combine like terms: 8x + 5x = 13x
-21 + 13x = -21 + 13x

Add '21' to each side of the equation.
-21 + 21 + 13x = -21 + 21 + 13x

Combine like terms: -21 + 21 = 0
0 + 13x = -21 + 21 + 13x
13x = -21 + 21 + 13x

Combine like terms: -21 + 21 = 0
13x = 0 + 13x
13x = 13x

Add '-13x' to each side of the equation.
13x + -13x = 13x + -13x

Combine like terms: 13x + -13x = 0
0 = 13x + -13x

Combine like terms: 13x + -13x = 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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