Respuesta :

-8+9+5(3)+7(5)
-8+9+15+35
1+50
=51
Just substitute their values into the expression:
= -8 + 9 + 5z + 7x
= -8 + 9 + 5(3) + 7(5)
= 1 + 15 + 35
= 51

In short, Your Answer would be 51

Hope this helps!