We are given expression i - 0.3i.
i can be written as 1i because when we don't have any number in front of a variable, the coefficent is 1.
i represents imaginary number there.
Therefore, we need to subtract 1i - 0.3i.
In order to subtract 1i-0.3i, we need to subtract 0.3 from 1.
We get 1-0.3 =0.7.
Therefore, i - 0.3i = 0.7i.
