12=-0.4x

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Solution for 12=-0.4x equation:


Simplifying
12 = -0.4x

Solving
12 = -0.4x

Solving for variable 'x'.

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

Add '0.4x' to each side of the equation.
12 + 0.4x = -0.4x + 0.4x

Combine like terms: -0.4x + 0.4x = 0.0
12 + 0.4x = 0.0

Add '-12' to each side of the equation.
12 + -12 + 0.4x = 0.0 + -12

Combine like terms: 12 + -12 = 0
0 + 0.4x = 0.0 + -12
0.4x = 0.0 + -12

Combine like terms: 0.0 + -12 = -12
0.4x = -12

Divide each side by '0.4'.
x = -30

Simplifying
x = -30

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