39=-3(21-x)+3(x-2)

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Solution for 39=-3(21-x)+3(x-2) equation: 


Simplifying
39 = -3(21 + -1x) + 3(x + -2)
39 = (21 * -3 + -1x * -3) + 3(x + -2)
39 = (-63 + 3x) + 3(x + -2)

Reorder the terms:
39 = -63 + 3x + 3(-2 + x)
39 = -63 + 3x + (-2 * 3 + x * 3)
39 = -63 + 3x + (-6 + 3x)

Reorder the terms:
39 = -63 + -6 + 3x + 3x

Combine like terms: -63 + -6 = -69
39 = -69 + 3x + 3x

Combine like terms: 3x + 3x = 6x
39 = -69 + 6x

Solving
39 = -69 + 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.
39 + -6x = -69 + 6x + -6x

Combine like terms: 6x + -6x = 0
39 + -6x = -69 + 0
39 + -6x = -69

Add '-39' to each side of the equation.
39 + -39 + -6x = -69 + -39

Combine like terms: 39 + -39 = 0
0 + -6x = -69 + -39
-6x = -69 + -39

Combine like terms: -69 + -39 = -108
-6x = -108

Divide each side by '-6'.
x = 18

Simplifying
x = 18

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