1=0.4x-0.9-9

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Solution for 1=0.4x-0.9-9 equation: 



1=0.4x-0.9-9

We move all terms to the left:

1-(0.4x-0.9-9)=0

We add all the numbers together, and all the variables

-(0.4x-9.9)+1=0

We get rid of parentheses

-0.4x+9.9+1=0

We add all the numbers together, and all the variables

-0.4x+10.9=0

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

-0.4x=-10.9

x=-10.9/-0.4

x=27+0.1/0.4

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