Simplify the expression 7/2i

Question

What is the answer?

Answer 1

7/2i

as you know, you can multiply both 7 and 2i by the same number and it'll stay the same. just like 1/3 and (1*3)/(3*3) are the same.

here you have to multiply both by the opposite of the irrational number. so:

7(-2i)/2i(-2i)  

-14i/-4(i^2) /// now i^2=-1 remember?

-14i/4

-3.5i