-3x-3(2x)=21

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


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

Remove parenthesis around (2x)
-3x + -3 * 2x = 21

Multiply -3 * 2
-3x + -6x = 21

Combine like terms: -3x + -6x = -9x
-9x = 21

Solving
-9x = 21

Solving for variable 'x'.

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

Divide each side by '-9'.
x = -2.333333333

Simplifying
x = -2.333333333

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