5.78=3.9+0.4x

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Solution for 5.78=3.9+0.4x equation: 



5.78=3.9+0.4x

We move all terms to the left:

5.78-(3.9+0.4x)=0

We add all the numbers together, and all the variables

-(0.4x+3.9)+5.78=0

We get rid of parentheses

-0.4x-3.9+5.78=0

We add all the numbers together, and all the variables

-0.4x+1.88=0

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

-0.4x=-1.88

x=-1.88/-0.4

x=4+0.28/0.4

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