3.0=-0.4x

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Solution for 3.0=-0.4x equation:


Simplifying
3.0 = -0.4x

Solving
3.0 = -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.
3.0 + 0.4x = -0.4x + 0.4x

Combine like terms: -0.4x + 0.4x = 0.0
3.0 + 0.4x = 0.0

Add '-3.0' to each side of the equation.
3.0 + -3.0 + 0.4x = 0.0 + -3.0

Combine like terms: 3.0 + -3.0 = 0.0
0.0 + 0.4x = 0.0 + -3.0
0.4x = 0.0 + -3.0

Combine like terms: 0.0 + -3.0 = -3
0.4x = -3

Divide each side by '0.4'.
x = -7.5

Simplifying
x = -7.5

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