2x+3.1=7.4.

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Solution for 2x+3.1=7.4. equation: 



2x+3.1=7.4.

We move all terms to the left:

2x+3.1-(7.4.)=0

We add all the numbers together, and all the variables

2x+3.1-0=0

We add all the numbers together, and all the variables

2x+3.1=0

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

2x=-3.1

x=-3.1/2

x=-1+1/1.8181818181818

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