9x-4=21x+4

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Solution for 9x-4=21x+4 equation:


Simplifying
9x + -4 = 21x + 4

Reorder the terms:
-4 + 9x = 21x + 4

Reorder the terms:
-4 + 9x = 4 + 21x

Solving
-4 + 9x = 4 + 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.
-4 + 9x + -21x = 4 + 21x + -21x

Combine like terms: 9x + -21x = -12x
-4 + -12x = 4 + 21x + -21x

Combine like terms: 21x + -21x = 0
-4 + -12x = 4 + 0
-4 + -12x = 4

Add '4' to each side of the equation.
-4 + 4 + -12x = 4 + 4

Combine like terms: -4 + 4 = 0
0 + -12x = 4 + 4
-12x = 4 + 4

Combine like terms: 4 + 4 = 8
-12x = 8

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

Simplifying
x = -0.6666666667

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