Answer :
Think of numbers that multiply to get 18 and see if they can make 7.
18 and 1 isn't going to make 7.
9 and 2 can, though!
One will need to be negative so that it multiplies to MINUS 18.
-9 + 2 = -7, so there's our answer.
18 and 1 isn't going to make 7.
9 and 2 can, though!
One will need to be negative so that it multiplies to MINUS 18.
-9 + 2 = -7, so there's our answer.
