7=2.9+x

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Solution for 7=2.9+x equation: 



7=2.9+x

We move all terms to the left:

7-(2.9+x)=0

We add all the numbers together, and all the variables

-(x+2.9)+7=0

We get rid of parentheses

-x-2.9+7=0

We add all the numbers together, and all the variables

-1x+4.1=0

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

-x=-4.1

x=-4.1/-1

x=4+0.1/1

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