5(i+1)=20

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Solution for 5(i+1)=20 equation: 



5(i+1)=20

We move all terms to the left:

5(i+1)-(20)=0

We multiply parentheses

5i+5-20=0

We add all the numbers together, and all the variables

5i-15=0

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

5i=15

i=15/5

i=3

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