18-30=-3x

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Solution for 18-30=-3x equation:


Simplifying
18 + -30 = -3x

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

Solving
-12 = -3x

Solving for variable 'x'.

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

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

Combine like terms: -3x + 3x = 0
-12 + 3x = 0

Add '12' to each side of the equation.
-12 + 12 + 3x = 0 + 12

Combine like terms: -12 + 12 = 0
0 + 3x = 0 + 12
3x = 0 + 12

Combine like terms: 0 + 12 = 12
3x = 12

Divide each side by '3'.
x = 4

Simplifying
x = 4

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