-9x-(3x+30)=12

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Solution for -9x-(3x+30)=12 equation:


Simplifying
-9x + -1(3x + 30) = 12

Reorder the terms:
-9x + -1(30 + 3x) = 12
-9x + (30 * -1 + 3x * -1) = 12
-9x + (-30 + -3x) = 12

Reorder the terms:
-30 + -9x + -3x = 12

Combine like terms: -9x + -3x = -12x
-30 + -12x = 12

Solving
-30 + -12x = 12

Solving for variable 'x'.

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

Add '30' to each side of the equation.
-30 + 30 + -12x = 12 + 30

Combine like terms: -30 + 30 = 0
0 + -12x = 12 + 30
-12x = 12 + 30

Combine like terms: 12 + 30 = 42
-12x = 42

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

Simplifying
x = -3.5

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