-3(4x+9)=15

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Solution for -3(4x+9)=15 equation:


Simplifying
-3(4x + 9) = 15

Reorder the terms:
-3(9 + 4x) = 15
(9 * -3 + 4x * -3) = 15
(-27 + -12x) = 15

Solving
-27 + -12x = 15

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 = 15 + 27

Combine like terms: -27 + 27 = 0
0 + -12x = 15 + 27
-12x = 15 + 27

Combine like terms: 15 + 27 = 42
-12x = 42

Divide each side by '-12'.
x = -3.5

Simplifying
x = -3.5

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