Question

Evaluate the following expression for n = -3 and p = 4

3(2n – p) + 5p – 2(n + 3p)

Answer 1

3(-6-4)+20-2(-3+12)
-30+20+6-24=-4-24=-28

Answer 2

Plug in n = -3 and p = 4 and evaluate


3(2n – p) + 5p – 2(n + 3p)


3(2(-3) – 4) + 5(4) – 2(-3 + 3(4))


3(-6 – 4) + 20 – 2(-3 + 12)


3(-10) + 20 – 2(9)


-30 + 20 – 18


-28


So 3(2n – p) + 5p – 2(n + 3p) = -28 when n = -3 and p = 4