13-x=x-4x

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Solution for 13-x=x-4x equation:


Simplifying
13 + -1x = x + -4x

Combine like terms: x + -4x = -3x
13 + -1x = -3x

Solving
13 + -1x = -3x

Solving for variable 'x'.

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

Add '3x' to each side of the equation.
13 + -1x + 3x = -3x + 3x

Combine like terms: -1x + 3x = 2x
13 + 2x = -3x + 3x

Combine like terms: -3x + 3x = 0
13 + 2x = 0

Add '-13' to each side of the equation.
13 + -13 + 2x = 0 + -13

Combine like terms: 13 + -13 = 0
0 + 2x = 0 + -13
2x = 0 + -13

Combine like terms: 0 + -13 = -13
2x = -13

Divide each side by '2'.
x = -6.5

Simplifying
x = -6.5

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