Answer:
Step-by-step explanation:
x + x + 90 = 180
2x + 90 = 180
2x = 90
x = 45
"A number" represents the unknown.
"Quotient" means the total of a division problem.
Our equation is set up like this: M / (-3.2) = 15
(Optional) The answer is: -48 / (-3.2) = 15