(x-0.3x)-0.4(x-0.3x)=x

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Solution for (x-0.3x)-0.4(x-0.3x)=x equation: 



(x-0.3x)-0.4(x-0.3x)=x

We move all terms to the left:

(x-0.3x)-0.4(x-0.3x)-(x)=0

We add all the numbers together, and all the variables

(+0.7x)-0.4(+0.7x)-x=0

We add all the numbers together, and all the variables

-1x+(+0.7x)-0.4(+0.7x)=0

We multiply parentheses

-1x+(+0.7x)-0x=0

We get rid of parentheses

-1x+0.7x-0x=0

We add all the numbers together, and all the variables

-1.3x=0

x=0/-1.3

x=0

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