-x-5.1=-4x+3.9

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Solution for -x-5.1=-4x+3.9 equation: 



-x-5.1=-4x+3.9

We move all terms to the left:

-x-5.1-(-4x+3.9)=0

We add all the numbers together, and all the variables

-1x-(-4x+3.9)-5.1=0

We get rid of parentheses

-1x+4x-3.9-5.1=0

We add all the numbers together, and all the variables

3x-9=0

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

3x=9

x=9/3

x=3

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