9x-8=21x

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Solution for 9x-8=21x equation:


Simplifying
9x + -8 = 21x

Reorder the terms:
-8 + 9x = 21x

Solving
-8 + 9x = 21x

Solving for variable 'x'.

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

Add '-21x' to each side of the equation.
-8 + 9x + -21x = 21x + -21x

Combine like terms: 9x + -21x = -12x
-8 + -12x = 21x + -21x

Combine like terms: 21x + -21x = 0
-8 + -12x = 0

Add '8' to each side of the equation.
-8 + 8 + -12x = 0 + 8

Combine like terms: -8 + 8 = 0
0 + -12x = 0 + 8
-12x = 0 + 8

Combine like terms: 0 + 8 = 8
-12x = 8

Divide each side by '-12'.
x = -0.6666666667

Simplifying
x = -0.6666666667

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