2*i+1=18

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Solution for 2*i+1=18 equation: 



2i+1=18

We move all terms to the left:

2i+1-(18)=0

We add all the numbers together, and all the variables

2i-17=0

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

2i=17

i=17/2

i=8+1/2

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