3.9=1.80x

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Solution for 3.9=1.80x equation: 



3.9=1.80x

We move all terms to the left:

3.9-(1.80x)=0

We add all the numbers together, and all the variables

-(+1.80x)+3.9=0

We get rid of parentheses

-1.80x+3.9=0

We add all the numbers together, and all the variables

-1.8x+3.9=0

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

-1.8x=-3.9

x=-3.9/-1.8

x=2+0.3/1.8

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