That depends on what the number is which you are decreasing by.
It is a number less than or equal to 12. Beyond that nothing more can be said without further information.
Chat with our AI personalities
It is: 12 ≤ N - 7
17
12-2n= -72n = 19n = 9.5
to triple a number that was decreased by five you subtract 5 and then multiply by three. for example if you where given 10 you would 12-5=7 -> 7*3=21
"decreased by" means "minus" 12 decreased by z means 12 - z It really is that simple.