13-5x=21-4x

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Solution for 13-5x=21-4x equation:


Simplifying
13 + -5x = 21 + -4x

Solving
13 + -5x = 21 + -4x

Solving for variable 'x'.

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

Add '4x' to each side of the equation.
13 + -5x + 4x = 21 + -4x + 4x

Combine like terms: -5x + 4x = -1x
13 + -1x = 21 + -4x + 4x

Combine like terms: -4x + 4x = 0
13 + -1x = 21 + 0
13 + -1x = 21

Add '-13' to each side of the equation.
13 + -13 + -1x = 21 + -13

Combine like terms: 13 + -13 = 0
0 + -1x = 21 + -13
-1x = 21 + -13

Combine like terms: 21 + -13 = 8
-1x = 8

Divide each side by '-1'.
x = -8

Simplifying
x = -8

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