12x-3=30x+9

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


Simplifying
12x + -3 = 30x + 9

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

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

Solving
-3 + 12x = 9 + 30x

Solving for variable 'x'.

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

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

Combine like terms: 12x + -30x = -18x
-3 + -18x = 9 + 30x + -30x

Combine like terms: 30x + -30x = 0
-3 + -18x = 9 + 0
-3 + -18x = 9

Add '3' to each side of the equation.
-3 + 3 + -18x = 9 + 3

Combine like terms: -3 + 3 = 0
0 + -18x = 9 + 3
-18x = 9 + 3

Combine like terms: 9 + 3 = 12
-18x = 12

Divide each side by '-18'.
x = -0.6666666667

Simplifying
x = -0.6666666667

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