Question

how can you use the following numbers in an equation 5 7 9 10 12 (using each number only once) to get the answer 3?

Answer 1

what equation?

Answer 2

just subtract 2 everytime and the next term you will get is 3

Answer 3

Any equation you can make up. Using those numbers.

Answer 4

You can't use 2. You can only use these numbers.

Answer 5

yeah to get 3 you have to subtract by 2