0,3x=3,9-x

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Solution for 0,3x=3,9-x equation: 



0.3x=3.9-x

We move all terms to the left:

0.3x-(3.9-x)=0

We add all the numbers together, and all the variables

0.3x-(-1x+3.9)=0

We get rid of parentheses

0.3x+1x-3.9=0

We add all the numbers together, and all the variables

1.3x-3.9=0

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

1.3x=3.9

x=3.9/1.3

x=3+-4.4408920985006E-16/1.3

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