We'll first simplify both sides of the expression to get (simply using the distributive property):

Then, we can simplify a little bit:

To solve for n, we have to isolate it. Let's subtract 3n from both sides to further simplify it:

Then, add 18 to both sides to get the value of n:

And that's your answer. If you have questions on how I got that, feel free to ask!
Answer:
Step-by-step explanation:
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Evaluate (4-2) = 2
Multiply 2•(1-5i) = 2 -10i
11. 10^-8 = 1 • 10^-8 in decimal form
12. 6 • 10^-4 = 0.0006 in decimal form
13. n^m turns into 5^4
5 • 5 • 5 • 5 = 625
5^4 = 625
For 28(3/4), the answer is 21