9-3(2x-4)=6x+21

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Solution for 9-3(2x-4)=6x+21 equation:


Simplifying
9 + -3(2x + -4) = 6x + 21

Reorder the terms:
9 + -3(-4 + 2x) = 6x + 21
9 + (-4 * -3 + 2x * -3) = 6x + 21
9 + (12 + -6x) = 6x + 21

Combine like terms: 9 + 12 = 21
21 + -6x = 6x + 21

Reorder the terms:
21 + -6x = 21 + 6x

Add '-21' to each side of the equation.
21 + -21 + -6x = 21 + -21 + 6x

Combine like terms: 21 + -21 = 0
0 + -6x = 21 + -21 + 6x
-6x = 21 + -21 + 6x

Combine like terms: 21 + -21 = 0
-6x = 0 + 6x
-6x = 6x

Solving
-6x = 6x

Solving for variable 'x'.

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

Add '-6x' to each side of the equation.
-6x + -6x = 6x + -6x

Combine like terms: -6x + -6x = -12x
-12x = 6x + -6x

Combine like terms: 6x + -6x = 0
-12x = 0

Divide each side by '-12'.
x = 0

Simplifying
x = 0

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