What is the solution to the equation 1 over 5 multiplied by n equals 3?

Create a real-life situation and create a system and show how it might be modeled algebraically with a system of equations (or inequalities) show all work include a few sentences explaining the situation, your variables of choice and what each represents, and how you would set it up and solve it algebraically. !

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?