21=3(x-2)-6x

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


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

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

Combine like terms: 3x + -6x = -3x
21 = -6 + -3x

Solving
21 = -6 + -3x

Solving for variable 'x'.

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

Add '3x' to each side of the equation.
21 + 3x = -6 + -3x + 3x

Combine like terms: -3x + 3x = 0
21 + 3x = -6 + 0
21 + 3x = -6

Add '-21' to each side of the equation.
21 + -21 + 3x = -6 + -21

Combine like terms: 21 + -21 = 0
0 + 3x = -6 + -21
3x = -6 + -21

Combine like terms: -6 + -21 = -27
3x = -27

Divide each side by '3'.
x = -9

Simplifying
x = -9

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