18-30=-4x

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Solution for 18-30=-4x equation:


Simplifying
18 + -30 = -4x

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

Solving
-12 = -4x

Solving for variable 'x'.

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

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

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

Add '12' to each side of the equation.
-12 + 12 + 4x = 0 + 12

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

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

Divide each side by '4'.
x = 3

Simplifying
x = 3

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