x-3=0.4x

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Solution for x-3=0.4x equation: 



x-3=0.4x

We move all terms to the left:

x-3-(0.4x)=0

We add all the numbers together, and all the variables

x-(+0.4x)-3=0

We get rid of parentheses

x-0.4x-3=0

We add all the numbers together, and all the variables

0.6x-3=0

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

0.6x=3

x=3/0.6

x=5

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