-9-(12-3x)=x

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


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

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

Solving
-21 + 3x = x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
-21 + 3x + -1x = x + -1x

Combine like terms: 3x + -1x = 2x
-21 + 2x = x + -1x

Combine like terms: x + -1x = 0
-21 + 2x = 0

Add '21' to each side of the equation.
-21 + 21 + 2x = 0 + 21

Combine like terms: -21 + 21 = 0
0 + 2x = 0 + 21
2x = 0 + 21

Combine like terms: 0 + 21 = 21
2x = 21

Divide each side by '2'.
x = 10.5

Simplifying
x = 10.5

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