Question

What is the value of 3x+3(xy−z) when x=4, y=−2, and z=−3 ?

Answer 1

- 3

Explanation:

given

3x + 3(xy - z) ← substitute x = 4, y = - 2 , z = - 3 into the expression

= 3(4) + 3(4(- 2) - (- 3) )

= 12 + 3(- 8 + 3)

= 12 + 3(- 5)

= 12 - 15

= - 3