I4x-1I=7

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Solution for I4x-1I=7 equation: 



4I-1=7

We move all terms to the left:

4I-1-(7)=0

We add all the numbers together, and all the variables

4I-8=0

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

4I=8

I=8/4

I=2

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