Question 609329
i need help because my cst is tomorrow and i do not know how to do it 
my problem is which expression is equivalent to the sum of the complex numbers (7x+3i) and (4x-2i)
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(7x+3i) + (4x-2i)
Add the real parts
7x + 4x = 11x
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Add the imaginary parts
3i + (-2i) = i
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--> 11x + i