-3(6+3x)=-126

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Solution for -3(6+3x)=-126 equation: 


Simplifying
-3(6 + 3x) = -126
(6 * -3 + 3x * -3) = -126
(-18 + -9x) = -126

Solving
-18 + -9x = -126

Solving for variable 'x'.

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

Add '18' to each side of the equation.
-18 + 18 + -9x = -126 + 18

Combine like terms: -18 + 18 = 0
0 + -9x = -126 + 18
-9x = -126 + 18

Combine like terms: -126 + 18 = -108
-9x = -108

Divide each side by '-9'.
x = 12

Simplifying
x = 12

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