30-3x=12-9x

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Solution for 30-3x=12-9x equation:


Simplifying
30 + -3x = 12 + -9x

Solving
30 + -3x = 12 + -9x

Solving for variable 'x'.

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

Add '9x' to each side of the equation.
30 + -3x + 9x = 12 + -9x + 9x

Combine like terms: -3x + 9x = 6x
30 + 6x = 12 + -9x + 9x

Combine like terms: -9x + 9x = 0
30 + 6x = 12 + 0
30 + 6x = 12

Add '-30' to each side of the equation.
30 + -30 + 6x = 12 + -30

Combine like terms: 30 + -30 = 0
0 + 6x = 12 + -30
6x = 12 + -30

Combine like terms: 12 + -30 = -18
6x = -18

Divide each side by '6'.
x = -3

Simplifying
x = -3

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