21=-3(23-x)+3(x-2)

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Solution for 21=-3(23-x)+3(x-2) equation:


Simplifying
21 = -3(23 + -1x) + 3(x + -2)
21 = (23 * -3 + -1x * -3) + 3(x + -2)
21 = (-69 + 3x) + 3(x + -2)

Reorder the terms:
21 = -69 + 3x + 3(-2 + x)
21 = -69 + 3x + (-2 * 3 + x * 3)
21 = -69 + 3x + (-6 + 3x)

Reorder the terms:
21 = -69 + -6 + 3x + 3x

Combine like terms: -69 + -6 = -75
21 = -75 + 3x + 3x

Combine like terms: 3x + 3x = 6x
21 = -75 + 6x

Solving
21 = -75 + 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.
21 + -6x = -75 + 6x + -6x

Combine like terms: 6x + -6x = 0
21 + -6x = -75 + 0
21 + -6x = -75

Add '-21' to each side of the equation.
21 + -21 + -6x = -75 + -21

Combine like terms: 21 + -21 = 0
0 + -6x = -75 + -21
-6x = -75 + -21

Combine like terms: -75 + -21 = -96
-6x = -96

Divide each side by '-6'.
x = 16

Simplifying
x = 16

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