20i=7i+91

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Solution for 20i=7i+91 equation: 



20i=7i+91

We move all terms to the left:

20i-(7i+91)=0

We get rid of parentheses

20i-7i-91=0

We add all the numbers together, and all the variables

13i-91=0

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

13i=91

i=91/13

i=7

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