9.9=3.1-3.4x

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Solution for 9.9=3.1-3.4x equation: 



9.9=3.1-3.4x

We move all terms to the left:

9.9-(3.1-3.4x)=0

We add all the numbers together, and all the variables

-(-3.4x+3.1)+9.9=0

We get rid of parentheses

3.4x-3.1+9.9=0

We add all the numbers together, and all the variables

3.4x+6.8=0

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

3.4x=-6.8

x=-6.8/3.4

x=-2

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