(12-4x)=30

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Solution for (12-4x)=30 equation: 


Simplifying
(12 + -4x) = 30

Remove parenthesis around (12 + -4x)
12 + -4x = 30

Solving
12 + -4x = 30

Solving for variable 'x'.

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

Add '-12' to each side of the equation.
12 + -12 + -4x = 30 + -12

Combine like terms: 12 + -12 = 0
0 + -4x = 30 + -12
-4x = 30 + -12

Combine like terms: 30 + -12 = 18
-4x = 18

Divide each side by '-4'.
x = -4.5

Simplifying
x = -4.5

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