How do you simplify #(10-2i)+(-11-7i)#?

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Answer 1 · 2018-07-28T20:01:31

#-1-9i#

#"simplify by collecting like terms"#

#=10-2i-11-7i#

#=(10-11)+(-2i-7i)#

#=-1-9i#

Answer 2 · 2018-07-28T20:14:38

#-1-9i#

For the most part, even though it isn't, we can treat the imaginary unit like it is a variable. We have

#10-2i-11-7i#

We combine the constants and the imaginary terms respectively to get

#-1-9i#

Hope this helps!