-9-(12-3x)=

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


Simplifying
-9 + -1(12 + -3x) = 0
-9 + (12 * -1 + -3x * -1) = 0
-9 + (-12 + 3x) = 0

Combine like terms: -9 + -12 = -21
-21 + 3x = 0

Solving
-21 + 3x = 0

Solving for variable 'x'.

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

Add '21' to each side of the equation.
-21 + 21 + 3x = 0 + 21

Combine like terms: -21 + 21 = 0
0 + 3x = 0 + 21
3x = 0 + 21

Combine like terms: 0 + 21 = 21
3x = 21

Divide each side by '3'.
x = 7

Simplifying
x = 7

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