3(9-4x)=-45

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Solution for 3(9-4x)=-45 equation: 


Simplifying
3(9 + -4x) = -45
(9 * 3 + -4x * 3) = -45
(27 + -12x) = -45

Solving
27 + -12x = -45

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 + -12x = -45 + -27

Combine like terms: 27 + -27 = 0
0 + -12x = -45 + -27
-12x = -45 + -27

Combine like terms: -45 + -27 = -72
-12x = -72

Divide each side by '-12'.
x = 6

Simplifying
x = 6

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