The total of a number and -15 equals -6

x = 9

Step-by-step explanation:

Create an equation:

x = some number

and = add

other number = -15

x + (-15) = -6

remove () using rule

x - 15 = -6

add +15 to both sides

x = 9

Step-by-step explanation:

The scientific method is a process for experimentation that is used to explore observations and answer questions. Does this mean all scientists follow exactly this process? No. Some areas of science can be more easily tested than others. For example, scientists studying how stars change as they age or how dinosaurs digested their food cannot fast-forward a star's life by a million years or run medical exams on feeding dinosaurs to test their hypotheses.