I7x-1I=I9x+2I

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Solution for I7x-1I=I9x+2I equation: 



7I-1=9I+2

We move all terms to the left:

7I-1-(9I+2)=0

We get rid of parentheses

7I-9I-2-1=0

We add all the numbers together, and all the variables

-2I-3=0

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

-2I=3

I=3/-2

I=-1+1/2

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