3.9=-1.3x

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Solution for 3.9=-1.3x equation: 



3.9=-1.3x

We move all terms to the left:

3.9-(-1.3x)=0

We get rid of parentheses

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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