-3(x-7)-9=12

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Solution for -3(x-7)-9=12 equation: 


Simplifying
-3(x + -7) + -9 = 12

Reorder the terms:
-3(-7 + x) + -9 = 12
(-7 * -3 + x * -3) + -9 = 12
(21 + -3x) + -9 = 12

Reorder the terms:
21 + -9 + -3x = 12

Combine like terms: 21 + -9 = 12
12 + -3x = 12

Add '-12' to each side of the equation.
12 + -12 + -3x = 12 + -12

Combine like terms: 12 + -12 = 0
0 + -3x = 12 + -12
-3x = 12 + -12

Combine like terms: 12 + -12 = 0
-3x = 0

Solving
-3x = 0

Solving for variable 'x'.

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

Divide each side by '-3'.
x = 0

Simplifying
x = 0

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