13+7x+-21=5x+-8

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Solution for 13+7x+-21=5x+-8 equation:


Simplifying
13 + 7x + -21 = 5x + -8

Reorder the terms:
13 + -21 + 7x = 5x + -8

Combine like terms: 13 + -21 = -8
-8 + 7x = 5x + -8

Reorder the terms:
-8 + 7x = -8 + 5x

Add '8' to each side of the equation.
-8 + 8 + 7x = -8 + 8 + 5x

Combine like terms: -8 + 8 = 0
0 + 7x = -8 + 8 + 5x
7x = -8 + 8 + 5x

Combine like terms: -8 + 8 = 0
7x = 0 + 5x
7x = 5x

Solving
7x = 5x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-5x' to each side of the equation.
7x + -5x = 5x + -5x

Combine like terms: 7x + -5x = 2x
2x = 5x + -5x

Combine like terms: 5x + -5x = 0
2x = 0

Divide each side by '2'.
x = 0

Simplifying
x = 0

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