20x-4+3-21x=x

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Solution for 20x-4+3-21x=x equation:


Simplifying
20x + -4 + 3 + -21x = x

Reorder the terms:
-4 + 3 + 20x + -21x = x

Combine like terms: -4 + 3 = -1
-1 + 20x + -21x = x

Combine like terms: 20x + -21x = -1x
-1 + -1x = x

Solving
-1 + -1x = x

Solving for variable 'x'.

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

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

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

Combine like terms: x + -1x = 0
-1 + -2x = 0

Add '1' to each side of the equation.
-1 + 1 + -2x = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -2x = 0 + 1
-2x = 0 + 1

Combine like terms: 0 + 1 = 1
-2x = 1

Divide each side by '-2'.
x = -0.5

Simplifying
x = -0.5

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