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3i+6=7(i-2)
We move all terms to the left:
3i+6-(7(i-2))=0
We calculate terms in parentheses: -(7(i-2)), so:We get rid of parentheses
7(i-2)
We multiply parentheses
7i-14
Back to the equation:
-(7i-14)
3i-7i+14+6=0
We add all the numbers together, and all the variables
-4i+20=0
We move all terms containing i to the left, all other terms to the right
-4i=-20
i=-20/-4
i=+5
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