.4=x/100

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Solution for .4=x/100 equation: 



.4=x/100

We move all terms to the left:

.4-(x/100)=0

We add all the numbers together, and all the variables

-(+x/100)+.4=0

We add all the numbers together, and all the variables

-(+x/100)+0.4=0

We get rid of parentheses

-x/100+0.4=0

We multiply all the terms by the denominator


-x+(0.4)*100=0

We add all the numbers together, and all the variables

-1x+40=0

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

-x=-40

x=-40/-1

x=+40

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