-9=-3(x-4)

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Solution for -9=-3(x-4) equation:


Simplifying
-9 = -3(x + -4)

Reorder the terms:
-9 = -3(-4 + x)
-9 = (-4 * -3 + x * -3)
-9 = (12 + -3x)

Solving
-9 = 12 + -3x

Solving for variable 'x'.

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

Add '3x' to each side of the equation.
-9 + 3x = 12 + -3x + 3x

Combine like terms: -3x + 3x = 0
-9 + 3x = 12 + 0
-9 + 3x = 12

Add '9' to each side of the equation.
-9 + 9 + 3x = 12 + 9

Combine like terms: -9 + 9 = 0
0 + 3x = 12 + 9
3x = 12 + 9

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

Divide each side by '3'.
x = 7

Simplifying
x = 7

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