I9-2x=7

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Solution for I9-2x=7 equation: 



9-2I=7

We move all terms to the left:

9-2I-(7)=0

We add all the numbers together, and all the variables

-2I+2=0

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

-2I=-2

I=-2/-2

I=1

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