3x-0.4=4x

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Solution for 3x-0.4=4x equation: 



3x-0.4=4x

We move all terms to the left:

3x-0.4-(4x)=0

We add all the numbers together, and all the variables

-1x-0.4=0

We move all terms containing x to the left, all other terms to the right

-x=0.4

x=0.4/-1

x=-0.4/1

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