-3(x+9)=-21

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


Simplifying
-3(x + 9) = -21

Reorder the terms:
-3(9 + x) = -21
(9 * -3 + x * -3) = -21
(-27 + -3x) = -21

Solving
-27 + -3x = -21

Solving for variable 'x'.

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

Add '27' to each side of the equation.
-27 + 27 + -3x = -21 + 27

Combine like terms: -27 + 27 = 0
0 + -3x = -21 + 27
-3x = -21 + 27

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

Divide each side by '-3'.
x = -2

Simplifying
x = -2

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