30=0.40(x)

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Solution for 30=0.40(x) equation: 



30=0.40(x)

We move all terms to the left:

30-(0.40(x))=0

We add all the numbers together, and all the variables

-(+0.40x)+30=0

We get rid of parentheses

-0.40x+30=0

We add all the numbers together, and all the variables

-0.4x+30=0

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

-0.4x=-30

x=-30/-0.4

x=+75

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