3x+9.9=4x-20.1

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Solution for 3x+9.9=4x-20.1 equation: 



3x+9.9=4x-20.1

We move all terms to the left:

3x+9.9-(4x-20.1)=0

We get rid of parentheses

3x-4x+20.1+9.9=0

We add all the numbers together, and all the variables

-1x+30=0

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

-x=-30

x=-30/-1

x=+30

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