Question

4i(-3-yi)+7=27-12i
What is the value of y?

Answer 1

first you need to expand the LHS

Answer 2

4i(-3-yi) = -12i - 4yi^2 = ?

Answer 3

What's LHS?

Answer 4

I'm not sure how you did that or how it helps me find the y value but I copied that question verbatim so I can't expand on anything

Answer 5

LHS is the left hand side of the equation which I've just expanded and now I'm asking you to do the next step?

Answer 6

Is it 4i(3-yi)=-12i+4

Answer 7

I mean+ 4y

Answer 8

yes it's -12i + 4y

so we now have -12i + 4y = 27 - 12i

Now solve for y. Add 12i to both sides and what do we get?

Answer 9

You get 4y=27?

Answer 10

Then you get y= 6.75?