Question

What is each sum or difference of `(7-2i)+(-3+i)`?

Answer 1

I got: `4-i`

Explanation:

We can get rid of the brackets and write it as:
`7-2i-3+i=`
Now we can add or subtract similar terms (the ones with `i` and the ones without):
`(7-3)+(-2i+i)=4-i`