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-12=-8-i/4
We move all terms to the left:
-12-(-8-i/4)=0
We add all the numbers together, and all the variables
-(-i/4-8)-12=0
We get rid of parentheses
i/4+8-12=0
We multiply all the terms by the denominator
i+8*4-12*4=0
We add all the numbers together, and all the variables
i-16=0
We move all terms containing i to the left, all other terms to the right
i=16
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