-I=9(k-10)

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Solution for -I=9(k-10) equation: 



-=9(I-10)

We move all terms to the left:

--(9(I-10))=0

We add all the numbers together, and all the variables

-(9(I-10))=0



We calculate terms in parentheses: -(9(I-10)), so:

9(I-10)

We multiply parentheses

9I-90

Back to the equation:

-(9I-90)



We get rid of parentheses

-9I+90=0

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

-9I=-90

I=-90/-9

I=+10

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