0.4*x=12

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Solution for 0.4*x=12 equation: 


Simplifying
0.4x = 12

Solving
0.4x = 12

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 = 30

Simplifying
x = 30

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