SOLUTION: if x=-1 and y=2 what is the value of the expression 2x-3xy?

Algebra ->  Expressions -> SOLUTION: if x=-1 and y=2 what is the value of the expression 2x-3xy?      Log On


   

Question 144443: if x=-1 and y=2 what is the value of the expression 2x-3xy?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
2x-3xy
Substitute -1 for x and 2 for y.
(2 times -1) - (3 times -1 times 2)
= -2 - (-3 times 2)
= -2 - (-6)
= -2 + 6
= 4