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0.7i+2.8=2.9i-3.8
We move all terms to the left:
0.7i+2.8-(2.9i-3.8)=0
We get rid of parentheses
0.7i-2.9i+3.8+2.8=0
We add all the numbers together, and all the variables
-2.2i+6.6=0
We move all terms containing i to the left, all other terms to the right
-2.2i=-6.6
i=-6.6/-2.2
i=2+1/1
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