Question

8m-5n-3p,when m = 15 ,n =-4andvp =20​

Answer 1

Answer:

8*15-5*(-4)-3*20

120+20-60

140-60

=80

Answer 2

$\rm{8m-5n-3p=8(15)-5(-4)-3(20)}\quad\textrm{... Since m = 15, n = -4 and p = 20}$

$\longrightarrow\rm{8m-5n-3p=120+20-60}$

$\longrightarrow\rm{8m-5n-3p=140-60=80}$