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(7+2i)+(1-4i)=0
We simplify the equation to the form, which is simple to understand
(7+2i)+(1-4i)=0
Remove unnecessary parentheses
7+2i+(1-4i)=0
Remove unnecessary parentheses
+7+2i+1-4i=0
We move all terms containing i to the left and all other terms to the right.
+2i-4i=0-7-1
We simplify left and right side of the equation.
-2i=-8
We divide both sides of the equation by -2 to get i.
i=4
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