Answer:
[tex]15y-10z[/tex]
Step-by-step explanation:
The Distributive law says that [tex]a*(b + c) = ab + ac[/tex]. This works just as well for [tex](b+c)*a = ba + ca[/tex] thanks to the Associative Law and [tex]ba + ca = ab + ac[/tex] thanks to the Commutative Law (although only for addition, not for subtraction).
Using the Distributive Property:
[tex](3y - 2z) * 5 = 3*y*5 - 2*z*5 = 15y - 10z[/tex]