-1.8=0.4x

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Solution for -1.8=0.4x equation:


Simplifying
-1.8 = 0.4x

Solving
-1.8 = 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.
-1.8 + -0.4x = 0.4x + -0.4x

Combine like terms: 0.4x + -0.4x = 0.0
-1.8 + -0.4x = 0.0

Add '1.8' to each side of the equation.
-1.8 + 1.8 + -0.4x = 0.0 + 1.8

Combine like terms: -1.8 + 1.8 = 0.0
0.0 + -0.4x = 0.0 + 1.8
-0.4x = 0.0 + 1.8

Combine like terms: 0.0 + 1.8 = 1.8
-0.4x = 1.8

Divide each side by '-0.4'.
x = -4.5

Simplifying
x = -4.5

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