1=0.4-0.8x-3

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Solution for 1=0.4-0.8x-3 equation: 



1=0.4-0.8x-3

We move all terms to the left:

1-(0.4-0.8x-3)=0

We add all the numbers together, and all the variables

-(-0.8x-2.6)+1=0

We get rid of parentheses

0.8x+2.6+1=0

We add all the numbers together, and all the variables

0.8x+3.6=0

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

0.8x=-3.6

x=-3.6/0.8

x=-4+0.4/0.8

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