Question

Evaluate:

3xy−5y for x=−1.5 and y=−3

Answer 1

3(1.5)(3) - 5(3)
7.5-15
=-7.5
You basically plug in the coefficients (numbers) into where the letters are then solve like normal. Hope this helped!

Answer 2

3(-1.5)(-3)-5(-3)
3(4.5)- -15
13.5+15
=28.5
the answer is 28.5