12-4(3x+8)=3x+9

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Solution for 12-4(3x+8)=3x+9 equation:


Simplifying
12 + -4(3x + 8) = 3x + 9

Reorder the terms:
12 + -4(8 + 3x) = 3x + 9
12 + (8 * -4 + 3x * -4) = 3x + 9
12 + (-32 + -12x) = 3x + 9

Combine like terms: 12 + -32 = -20
-20 + -12x = 3x + 9

Reorder the terms:
-20 + -12x = 9 + 3x

Solving
-20 + -12x = 9 + 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.
-20 + -12x + -3x = 9 + 3x + -3x

Combine like terms: -12x + -3x = -15x
-20 + -15x = 9 + 3x + -3x

Combine like terms: 3x + -3x = 0
-20 + -15x = 9 + 0
-20 + -15x = 9

Add '20' to each side of the equation.
-20 + 20 + -15x = 9 + 20

Combine like terms: -20 + 20 = 0
0 + -15x = 9 + 20
-15x = 9 + 20

Combine like terms: 9 + 20 = 29
-15x = 29

Divide each side by '-15'.
x = -1.933333333

Simplifying
x = -1.933333333

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