(-9+2i)-(12+4i)=

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Solution for (-9+2i)-(12+4i)= equation:


(-9+2i)-(12+4i)=0

We simplify the equation to the form, which is simple to understand 
(-9+2i)-(12+4i)=0

Remove unnecessary parentheses
-9+2i-(12+4i)=0

Remove unnecessary parentheses
-9+2i-12-4i=0

We move all terms containing i to the left and all other terms to the right. 
+2i-4i=0+9+12

We simplify left and right side of the equation. 
-2i=+21

We divide both sides of the equation by -2 to get i. 
i=-10.5

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