Question

12xy/×-y (if x = 3 and y = -1)

Answer 1

`(12xy)/(x-y)`

x = 3 and y = -1

Substitute x by 3 and y by -1

`(12(3)(-1))/(3-(-1))`

12(3)(-1) = -36

3 - (-1) = 3 + 1 = 4

`-(36)/(4)=-9`

The answer is -9