-0.4x=4.2

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Solution for -0.4x=4.2 equation: 


Simplifying
-0.4x = 4.2

Solving
-0.4x = 4.2

Solving for variable 'x'.

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

Divide each side by '-0.4'.
x = -10.5

Simplifying
x = -10.5

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