If five is subtracted from three times a certain number, the result is 10. what is the number?

First, you would need to form an equation. Five subtracted from a 3 times a number (let's use a variable 'n') would be: 3n - 5.

3n - 5 = 10.

Next, isolate the variable.

3n - 5 = 10

+ 5 + 5

3n = 15

Lastly, solve for n.

3n/3 = 15/3

n = 5