0.2x+3.1=0.7x-0.4

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Solution for 0.2x+3.1=0.7x-0.4 equation: 



0.2x+3.1=0.7x-0.4

We move all terms to the left:

0.2x+3.1-(0.7x-0.4)=0

We get rid of parentheses

0.2x-0.7x+0.4+3.1=0

We add all the numbers together, and all the variables

-0.5x+3.5=0

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

-0.5x=-3.5

x=-3.5/-0.5

x=+7

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